Mercury Outboard Forum
This is the best Mercury Outboard Forum on the internet, it's yours! If you own a Mercury Outboard. Are you looking for good advice about your Mercury outboard engine problems and issues. All you need to know about your outboard engine issues and good advice from your fellow boaters.
From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information at the Mercury Outboard Forum.
The 4th Edition of the Marine Electrical Electronics Bible Get your copy and start becoming self sufficient and save money on expensive technician callouts.Mercury outboard troubleshooting forums
So many queries and questions from frustrated outboard Mercury owners. Many are looking for Mercury outboard troubleshooting forums, Mercury outboard forum, Mercury outboard forums, Mercury outboard problems, Mercury forums outboard, Mercury outboard repair forum, Mercury marine forum and a lot more. We are focused in putting you in touch with others and trying to help if we can.
Mercury 150 hp four stroke problems, Mercury 4 stroke problems, Mercury 50 hp bigfoot 4 stroke problems, Mercury 150 four stroke problems, Mercury 115 four stroke problems, Mercury 90hp 4 stroke problems, Mercury 75hp 4 stroke problems, Mercury 4 stroke 30 hp problems, 2016 Mercury 115 four stroke problems, 2002 Mercury 115 four stroke problems, 2020 Mercury 115 four stroke problems, Mercury 25 hp 4 stroke problems, Mercury 4 stroke outboard motor problems, Mercury 60 hp 4 stroke problems and many more Mercury 4 Stroke outboard problems.
Mercury outboard repair forum
Mercruiser 350 mag mpi fuel pump problem, Mercruiser 4.3 power steering pump replacement, 4.3 Mercruiser hard start warm, Mercruiser 350 mag mpi problems, Mercruiser 350 mag mpi troubleshooting, Mercruiser 3.0 no power under load. Many more searches and problems to resolve.
Mercury 115 Pro XS problems, Mercury 225 Pro XS problems, Mercury 75 hp Optimax problems, 2021 Mercury 115 Pro XS problems, Mercury 200 EFI problems, Mercury Verado 150 problems, Mercury Pro XS 150 problems, Mercury 200 Pro XS problems
Mercury 40 hp 2 stroke problems, Mercury 115 2 stroke problems, Mercury 60 hp 2 stroke problems.
The 4th Edition of the Marine Electrical Electronics Bible Get your copy and start becoming self sufficient and save money on expensive technician callouts.
Mercury Outboard Problems
So where do you start? There is a lot to know. I get asked regularly about what is the problem, and more importantly and how to fix a problem. I am a boat owner and that’s why I have published a dozen books to tell you all that you need to know about how to take care of your boats and systems.
My name is JOHN C PAYNE, and many of you may already have one of my books on marine electrical and electronics systems (The recently published Marine Electrical and Electronics Bible now in it’s 4th Edition) or perhaps one of the many other books on sailboats and yacht systems and including The Motorboat Electrical Manual. Dont forget the Motorboat Electrical Manual.
The Mercury Outboard Technical Forum for Answers to Questions
I am not an armchair expert, but a qualified and practicing marine electrician and engineer and a marine surveyor. I do this for a living. Let this website help you with the boat forum! Thousands of people input with answers to problems.
What is your outboard problem? If you know what the problem is then you are halfway towards finding the right solution. Why not choose from one of my many books to help you fix your problems. Here are some hot topics for the boat-forum:
Battery Charging How to keep the power on and solve battery charging problems
Engines How to make sure your engine starts every time and how to fix it when it doesn’t
This is just a fraction of the 3000 plus questions that were posted, and it is hoped that this NEW Mercury Outboard forum and bulletin board does the same.
The Forum is also a great place to look for spare parts that are hard to find, share your problems and experience with others, ask questions, share stories and more about my books and related topics and a lot more. Create your own web page every time you submit an article and include great low resolution images as well. You can always head to Mercury Marine here.
How to Post Questions to this Mercury Outboard Forum
Forum Editors Forum Rules! Yes there are a few basics when posting!
1. DON'T TYPE IN ALL CAPITALS as it will not be posted. Don't use any HTML code as it will be deleted, or link to other sites
2. Don't use bad language or profanity as it will not be posted.
3. To post to the Outboard Forum please at least use a first name and location with your email address in the notification page, so you will get a message when someone leaves a comment.
4. You need to insert a couple of sentences describing you problem and add an image if possible as it helps others. If you insert just a couple of words using SMS speak the system will reject it. Don't post a message saying it will not start or some short few words, give us all some details and images if you can.
5. Don't Spam the site with multiple submissions. Submit just once please.
6. We receive dozens of posts a day and it is quite impossible to reply to more than just a few given this is a free site and I don't have enough time given I have a day job.
7. It helps if you start the headline with your Mercury outboard engine make/model number or boat make/model number. Save the problem description to the text, more detail means better answers.
Do You Have Mercury Outboard Engine Problems?
Do you have Mercury outboard engine problems? Share it on the Mercury Outboard Forum! Whether you are looking advice on an outboard motor or a difficult marine electrical or electronics technical problem then post your story or message here! UPLOAD AN IMAGE OF YOUR PROBLEM EQUIPMENT! Give us a detailed description, short 5 word posts are not much use and will not be posted. Put your boat info, outboard make and model or basic detail in the post title. Useful information on outboard boat motors. More great information at fishing and boats.
Have a Mercury Outboard problem to share?
Mercury outboard engine problems and issues? need someone to try and help resolve them? Then use this forum and maybe someone can help.
What Other Visitors Have Said
Click below to see contributions from other visitors to this page...
Mercury 50HP 4 cycle outboard 2020 
The last 2 times at the lake after it had ran for awhile and at high speed, the motor would die. After I would restart the motor it would run for about …
Mercury 75hp three cylinder two stroke 2002
The motor starts very well after a little bit of warming up it also idles very good coming up to speed getting on a plane seems to run very well but after …
Mercury, pro xs 2018
Engine will not start, clicks when key is turned. Replaced spark plug and it started but will not start now.
7.5 mercury 7036577
Engine will only start in fwd or reverse with full throttle new rings plugs seals water pump compression good all new gasket and have the shop manual carb …
1989 Mercury "classic fifty" 45hp
Engine Idles well, and makes good power, but runs rough (sounds like a misfire) at around half throttle, and also above 95% throttle. The misfire is related …
mercury 135 hp 1971
Hello.Flywheel turns aprox one rotation then stops. Goes back same and stops again. When I put in gear prop just clicks clockwise, counter clockwise it …
Mercury 2018 60 hp EFI CT Fourstroke
Engine starts good, runs fine except at idle after it warms up. Then runs rough like it's missing but not consistently. Never dies, just falters. If …
2013 mercury 25 four stroke efi
My engine cuts in and and out while running. Acting like it is maybe dropping a cylinder. Fuel system is clean and injectors seem to work fine when tested. …
1998 mercury 25hp bigfoot 4 stroke
It is on a 16 ft crest pontoon boat. 10 5/8 by 11 pitch prop. WOT is 5300 RPM. I switched to a 10 5/8 by 12 pitch prop RPM dropped to
4800 and engine …
2007 Mercury 115ELPT4S
Hey everyone, I have a little bit of aggravating troubleshooting. I have a 2007 Mercury 115 ELPT4S on a 24’ Bentley Pontoon. My serial number is 1B534635. …
Serial #0T572574 Model # 2002 50hp 50ELPTO
Can anyone tell me what the correct carburetor fuel tubing size is for a 2002 50hp 50ELPTO (serial # 0T572574) ? Thanks for help
1990 Merc 200 xre efi
Motor starts & runs just fine, but once clearing the buoy line it will not take the throttle. Can only get 1800-2000r's. Bogs as if dragging the dock along …
1996 mercury 40 horse 4 cylinder
Motor runs fine and then goes into limp mode. Tell tale is flowing fine. warm but not crazy hot. carbs are good. Went back to running full speed on the …
Mercury,150Tower of Power Inline 6 1978
It starts great idles great. It jumps out of the hole and cruises well. For about 15 - 20 min. Then falls of plane and wont rev over about 2000 RPM. I …
Mercury "tower of power" 115 hp 1982
The tell tale wasn't pissing water but wasn't running hot. Blew through the hose on top the head to the end tale tell fitting. Had a dirt dobbers nest …
Mercury 50ELPTEFI 2006 S# 1C012269
Hi, On my 2006 Mercury 50 hp four stoke engine the motor starter will not energize to turn the motor over. I had the safety kill switch up and lanyard …
Mercury 9.9 2020
Hi! I have a 2020 9.9 Mercury short shaft tiller model OB. Mercury Motor Manufacturer Item Number: 9-9MH-1F10201KK with a sizable crack on the rear of …
Mercury 1115P73KY-2B120347 Year 2015
New satisfied owner of Mercury 115 HP on the rear of the Uttern 5502. When I bought the boat, an error message diskboard "low oil pressure" could be detected. …
mercury 90 H.P. 2001 ELPTO
i need part numbers to rebuild my power trim pump and cylinder
2009 Mercury outboard, 4 stroke 90 HP Model #1F90413HD SR@1B759924
I recently purchased a 24' Pontoon boat, before launching it I changed the oil, upon removing the filter I noticed it was dry and had no oil residue in …
1993 Mercury 75 hp tiller with electric start
When turning the ignition key nothing happens, not even a cluck. Also, when trying to trim motor nothing happens. I swapped the battery but the problem …
mercury 50hp 2008
this motor floods out and has to set for a long while before attempting to start again...idle seems a bit rough when it does start
90 hp, 3 cylinder 2 stroke Mercury
Main control not changing gears after installation of a water impellor.
Mercury ELPTO 1989
2-Stroke "Tower of Power" motor runs smooth up to 2800-3200 rpm then begins to miss (rpms up and down), then surges like crazy. Replaced fuel in tank, …
Mecury, Pro XS 2021
Does anyone know who makes sensors for the Mercury outboards because its sure not Mercury, have been waiting on a sensor for a new engine now for 60 days …
Mercury 50elhpt 2016
engine starts and runs fine for about 1/2 mile and then surges up and down and almost dies. If I let off throttle it will run fine, If I go back to half …
Mercury 115 elpt efi 2007
Starts right up idles smoothly and runs smoothly until 2000 - 2200 rpm and then begins to stumble/bog down and drops 400 - 500 rpm. I have replaced both …
mercury 90 H.P. 2001 ELPTO
I cannot trim my motor up past 5 miles per hour. At idle boat will trim up and down fine. Motor stays up over night. Also if i trim up in water and take …
Mercury, 90 hp, four stroke, EFI
Engine starts on first crank. Runs fine for a period of time (10 to 30 minutes). Then runs rough and stalls. May or may not restart. If it restarts, it …
Mercury Outboard 80hp 1988
Hello to all, I've got a weird issue with my 1988 80hp Mercury Outboard. The engine has very low hrs on it and runs great. A month ago, I installed a …
1999 Mercury 150 EFI
This summer I have had to start using starter fluid to get my motor to run. Once started it will run and restart. I am noticing a rough idle though.
1999 200 efi mercury outboard
motor starts and runs great except at full throttle it will die after couple minutes but then restart right away go to full throttle and repete. changed …
Mercury Tracker 40 hp 2 stroke 4 cylinder
Changed out water pump now I have no reverse or neutral and it starts up in gear. Need help to understand how to get in back to normal. Thank you
Mercury,60hp 4 stroke, 2007
Suddenly the engine will not turn over. When I turn the ignition key, I get the usual beep at first position, then when key is turned, nothing. Starter …
60 hp efi, 2006
Doesn’t rev above 3500/4000 rpm for about 10 minutes then runs fine
1995 Mercury 90hp 2 stroke
Awhile back I was left high and dry on a launch when my motor wouldnt turn over. Was told my stator was going bad. Later that night my boat started up …
2019 mercury 40 hp 4 stroke efi 1F40413LZ
Motor has an aftermarket stainless prop at idle speed in gear it makes a clunking sound. The prop moves on the spline about 1/8 inch fore and aft.
Mercury 115 4 stroke 2006
Surging and missing at 2500 rpm-wot. New plugs, pencil coils new filters, water separator new fuel lines. All changed and still same issue.
Mercury 98M, 1982
I have a Tillotson carburetor Mercury part #7909 that I need a fuel bowl for. Every place I have looked says the carburetor or the bowl is no longer available. …
mercury V-275 ,1993, OD214487
Hello, I had a freeze in the lower gearcase, would like to know if it is repairable, if not where can I find another one? Thank you for your time. Get …
Mercury, m2, 2000
New battery but only clicking sound from engine compartment. No sound from starter and of course, engine won’t crank
2019 60 HP Command thrust
When the engine has sat for awhile, it starts right up, but dies after running for a minute or so, then will not even turn over (like the battery is dead). …
2015 Mercury 90 HP 4 stroke
I bought the boat (Tracker 1860 CC MVX) in 2018. It would do 44 mph+. At the end of last season (2020) it started missing at higher rpm/speed. Before …
mercury 90 H.P. 2001 ELPTO
I have a issue with the trim. The motor will trim up and down when idling, if I trim up and hit the gas the motor drops down and will not trim back up …
2017 60hp Tracker 175txw
I keep blowing the main 15amp fuse located on the motor. Tracker boats can not locate the issue. First time it happened the boat was stored for a couple …
Mercury 25hp 4 stroke 2016 tiller
25hp 4 stroke sat for 2 years with gas in it, It will not start. It is a 2016 tiller model with efi. I drained the tank and added fresh fuel, i drained …
2018 Mercury 150hp four stroke outboard
Engine won’t go over 4100rpms. No beeps or nothing. Changed plugs, prop hub nothing helps.
1996 60hp elpto
engine has been sitting for extended time in storage 6yrs what should i do before trying to start tia
mercury optimax 175 hp, 2995
Dies out on hard acceleration, No alarm, No sputter, just dies like I hit the emergency cutoff switch. Diagnostic by a professional tech shows no faults. …
Mercury 175 H P 1999
The engine will not cold start once started it runs fine all day leave it sit for 6 hours or more and the problem reoccurs for cold start took it to two …
Mercury 250 hp 2 stroke EFI 2004
It will not run at mid range rpm but will run at high and low range rpm. I changed all fuel filters and installed a throttle positioning sensor, do you …
Mercury 2020 60 hp 4 stroke efi. 1c602485
My cheap plastic coolant temp switch/sensor broke off in my exhaust cover. I need to know the thread size and pitch so I can properly clean the threads …
Mercury xr4 150 1989
When I go to start the engine cold, the starter cuts out after turning a couple of times. I have to keep doing this several times before it will start …
2007 Mercury 60 hp 4 stroke efi charging problem
have a Mercury 60 hp outboard that is blowing the 15 amp Smartcraft Data Bus fuse and stops charging the batteries. The fuse blows when the engine is …
2003 Mercury 115elpt4s
Idling too fast, hits hard going into gear and very hard to get it out of gear
mercury 30elpt 4 stroke 1989
Power tilt and trim problem. the engine will go up but not down about 80% of the time???
Mercury 150 XR6 outboard 2005 model
Water stopped coming out of tele tail port. Alarm comes in after engine warms up. Installed new impeller. Still no water from tail tell port. Removed thermostat …
mercury 150hp outboard 2018
I have a bennington 22 with a murcury 150 4 stroke on it.
we are having an electical issue with it not starting. a couple times it has shut off while …
2016 Mercury 115HP 4 stroke
After 30 or so minutes running around 3000 - 4000 RMP I get a miss in the engine. This miss only starts after 2600 RPM so if I stay under that there is …
Mercury 2006 200 hp Optimax
For 343 hrs since new the WOT has always been 5200 rpm. It dropped down to a max of 4800 rpm. Took it in and had new plugs and new reeds installed as they …
mercury classic 50 (45 horsepower) 1985 4 cyl
motor runs great at idle and reving up. Motor runs great when first taking off then not long after it bogs down . it won't shut off but most all power …
mercury, 4 stroke 150 hp 2012
both batteries fully charged. key switch replaced. Tether switch replaced. Starter motor removed, solenoid replaced and bench tested (all good). starter …
1990 mercury 90 hp 2 stroke
When I turn the ignition on, the 20 amp fuse located under the engine cowling next to the solenoid blows. If I do not turn the ignition switch on, everything …
2004 mercury 250 optimax
engine will not tach over 1900 rpm's under load. #3 cylinder shows signs of too much fuel in that cylinder. new spark plugs made no difference.
2008 Mercury Bigfoot 50hp
When out on the water, the engine is fine until we speed up pushing the throttle all the way forward. The engine will run fine for about 20-30seconds going …
01 Merc 50 2 stroke
Hi Everyone, Im working on a 01 Merc 50 2 stroke. It was a neighbors boat which sat for about 7 years. The engine has only around 100 hours on it if that. …
Mercury 40 hp 2cyl 2 stroke elpto 2002 OT548542
water comes from tell tale when cranking when engine starts water flow from valve stops and seems like exhaust comes from tell tale.Water pump has been …
Mercury 40hp efi 2015
When I engage gear the water pressure coming from the tell tale is reduced nearly to a minimum, sometimes even zero output. The engine obviously overheats …
Mercury four stroke efi 2007
Intermittent starting. Sometimes when I turn the key it just clicks.
Mercury 4hp 2cyl Gnat 1979
Starts OK except when I run the tank dry when hot (on the water) Then difficult to start and requires 3/4 choke to run at all for many minutes.
I've …
Mercury 200 Hp 2001 DFI
Dual engine 2001 Boston Whaler Outrage 26
After several minutes of running at above 3000 rpms, the motor will enter limp mode with no audible beeps. …
2005 Mercury 175 4 Stroke Supercharged
Went out fishing motor starting and stopping no problem all of a sudden tried starting motor wouldnt start and trim not working everything else lights …
Mercury 40 hp 4 stroke 2015 model bass tracker
Going into limp mode new fuel pump plugs fuel line has been on the shop twice and same issue runs good and then wont get over 3k rpms cranks right up even …
Mercury 115hp EFI 2014
I’ve been having problems with getting full power out on the water. I can run the engine for a short period using muffs at 4000rpm out of the water, no …
2B422869
boat/motor about 5 yrs old. 18 1/2 Lowe with 115 outboard jet. Used about 6 times. Original oil is still in Motor. I want to use the best synthetic quicksilver. …
Mercury 60elpt efi 2006
I bought this motor as a clearance in 2009 in Delaware USA ( new in crate) I then moved to Australia, and the motor stayed in the crate until 2 days ago.... …
2017 Mercury 40 hp 4 Stroke
When I turn the key I get the beep, but there is a 2-3 hesitation before the motor starts to turn over. After a couple tries, the motor starts and runs …
mercury 115 four stroke 2015
when im travelling on the lake say at 3600 rpm don't really seem to matter what rpmout of nowhere it starts to act like its misfiring or running …
2010 Mercury Opti max dfi 3.0
Fuel pump won’t turn on when I turn the key in the on position, therefore the motor won’t start, but will turn over. No fuel in the lower or high pressure …
Mercury Outboard 1997 125hp Elpto 2x2
Recently purchased 1997 Starcraft starship 2005 with 1997 Mercury 125hp Elpto 2x2. I recently had a tune up completed with new spark plugs, fuel filter, …
Mercury 60hp four stroke efi Bigfoot
Engine starts without hesitation. After you shift into forward, it accelerates as it should. Ater it runs at full throttle for a few minutes, the RPMs …
2005 mercury 200 optimax
My motor idles and runs fine at mid to low rpms but at high rpm it starts starts sputtering. I changed the fuel filter but the problem persists. Has anyone …
2008 Mercury 50HP EFI 4 stroke
Hi my name is Clint for Ontario Canada
Just bought this boat 2 weeks ago, everything is in good shape.
The other night i was fishing and had been trolling …
Mercury 50 hp two stroke 2001 triple cylinder
2001 50 hp two stroke mercury three cylinder. I am having issues with motor cutting out and then not starting. Right now I am scared to run pontoon on …
2019 150 Mercury Outboard
I bought new tritoon boat last season with a Mercury 150 outboard. Two weeks ago I would bring it to almost full RPS's then hear 6 audio tones and the …
Mercury 40hp 2 stroke 1980
Replaced starter and solenoid last weekend. Boat ran fine then let sit all week due to work took out started up no issues then died and now when trying …
2004 Mercury 115 EFI four stroke
My mercury 115 EFI four stroke develops an engine miss at around 5000 rpm.
The rpm drops approx 200 to 400 rpm. This miss comes and goes.
It appears …
mercury black max 1978 2 stroke 150 hp v6
cold Engine cranks quickly but does not start. will start if using starting fluid. carbs rebuilt. new fuel,new squeeze ball, electric choke. new plugs …
2004 Bass Tracker Pro Crappie 175
I have 2004 60hp merc 3 cyLinder. 3 carbs. The 2 cycle oil reservoir is mounted to front rite of engine. Now my problem. Got it out early spring an …
Mercury, 40eojet30, 1999
Since last fall the engine loses power. Starts fine, idles fine, no misses. I power up and get on plane in about 30-45 seconds. All okay for about another …
mercury 25hp 2006
i have a 2006 mercury 25hp 4 stroke efi and when i connect the earmuffs it idles and runs perfect but when under a load in the water then i will only go …
1996 Mercury 175 EFI outbaord motor
I have a 1996 Bayliner Rendezvous deck boat that I have had for several years. Cylinder 3 is dead and I have to repower this beast. There appear to be …
Mercruiser 3.0 Alpha One turns over but won't start
I just acquired a 1994 Bayliner Capri 1750 with a Mercruiser 3.o Alpha One that had been sitting for three months from a buddy. Got it home and noticed …
2002 Mercury 225
Well starter was sticking so replaced the solenoid and did not fix the issue. That did not fix the issue. The issue was the starter was getting stuck in …
1995 merc 40 hp wont plane, 3400 rpm
boat ran great, then suddenly would not run over 4200rpm, down from @5200. barely plane. I eliminated fuel system fromexit of cowl, then all nee fuel lines …
Mercury 2015 150 Heavy shaking
I have a heavy shaking starts at 2800 rpm while under load.
It's a mercury outboard 2015 150 4 stroke.
The motor shake the same way when in neutral and …
40hp merc 4stroke runs fine then starts loosing power
My 2011 bass tracker 40 hp four stroke mercury will start up and run fine for a while then it starts losing power and bogging down to nothing , You can …
Mercury runs half speed until hot
My Mercury outboard thunderbolt 50 hp runs at half speed for about 20 min then it takes off like a bat out of hell. It has new plugs sprayed the carbs …
Mercury 115 1994-95 Leaking water from the thermostat
I have an Mercury 115 1994-95 it is leaking water from the place the thermostat is, other owner told me it was because water here in the north is so cold. …
210 h.p. mercury m2 v6 wont rev past 3000
Got involved with a repo of a Sea Doo Challenger. Parts missing, bottom carb shaft frozen. Not running. Got it running, but wont run above 3000 and sounds …
1988 mercury 60 hp outboard sudden loss of power.
I have a 1988 mercury 60hp. While running at full speed I began hearing a long beep. Within 30 seconds I had a sudden loss of power, then died. It started …
3L mercruiser i/o
After taking boat out of winter storage, I attached hose and boat ears turned on water and started engine. It runs if above 3000rpm, but anything less …
1983 mercury 35 hp
I have 1983 mercury outboard 35hp, in idle speed will push the boat, but as soon i put it in full throttle it just rev up the motor and would not pushes …
77 Mercruiser in line 6 fuel problems
Hello, my77 glastron 165hp after shut down suddenly started to start for a second and then stall out leaving me getting towed home. I replaced the fuel …
1989 Mercruiser 4.3L Power steering pump Replacement
I recently bought a boat with a 1989 MercCruiser engine. We had in for its service and now the power steering pump is just bleeding fluid. The tech at …
84 mercury wont run at top speed
have a 84 mercury on a 84 skeeter boat runs great for 1 to 2 miles and them starts to slow down and want run above 1500 rpms try to thottle it up it well …
55hp Mercury Boat wont start when in the water
My husband and I just boat a john boat with a 55hp Merc outboard motor. He cleaned and adjusted the carbs already. He then hooked it up to the hose and …
140 mercruiser wont reach full speed
have a 1986 mercruiser inboard starts and idols fine runs to about 1800 rpm and falls out when increased throttle rapidly what is the problem? I can mess …
7.4 mpi Mercruiser oil leak?
I have a 98 Formula 252 SS with a 7.4 mpi Mercruiser, Bravo 3 outdrive.....I bought the boat 3 years ago and have been restoring it slowly...Ive been very …
1988 175 HP Mercury
I have just been given a 1988 Ranger bass boat with a Mercury 175 HP motor. I know very little about boat motors. I can not get it to start. It did …
115 Mercury 2008 Triton runs too slow.
Three months ago we bought a (new)2008 Triton Cypress Cay Tritoon with a 115 Mercury. We got the boat from "Sport Boats USA" Ozark Mo.
When we took …
1985 75 hp Mercury - won't rev in water
we just bought a 1985 75hp mercury. we had the motor company where we bought it put it in the tank and all was well. we then took it to the water and …
Mercruiser 350 MAG MPI Problems
So a few weeks ago I was on my 2005 Chaparral Signature 240 equipped with a Mercruiser 350 MAG MPI with a Bravo Stern drive. I used the boat only about …
Mercury 115 hp outboard 2017 
After running for about 1 hour the engine starts to miss. It doesn’t matter if I’ve been running wide open for and hour or trolling. An hour into a trip …
Mercury 75hp 2016
Engine starts great, runs great up to 2000rpm. After 2000rpm it starts surging. After it runs for 15-20 minutes the surging stops and I can full throttle …
mercury 150hp four stroke 2015
Im in the northeast, just bought a boat with a 2015 mercury 4 stroke 150hp motor when I put the water muffs on it in my driveway it starts, idles a little …
1989 Mercury 90 Tilt and trim will not go up
Tilt and trim will not go up. I checked both relays with ohm meter and both works. Trim will go down and up every once in a while. Checked wires to trim …
Mercury 4s 150 2012 1150f23hd
PANIC - when unscrewing the compression test hose from the top cylinder, the adapter somehow got loose. So when I extracted the hose the adapter piece …
Mercury 200 v6 efi Not rated yet
I have a 6 cylinder 200 mercury efi outboard. I have changed all the fuel lines, and replaced the fuel filters. When I first put the boat in and go to …
1986 Mercury 2.2hp Not rated yet
I have been trying to find a compatible secondary ignition coil for this motor, with NO luck. The dont make original part or the one that succeeded it. …
1998 tracker 40elpto Not rated yet
having a hard time setting carbs (3 cyl) wondering if there is away to install vacuum ports and put a synchronizing tool on them the same way a motorcycle …
Mercury efi 150 xl 2001 Not rated yet
My fuel injected two stroke runs rough at idle to about 3000 rpm seems to develop full power and smooths out at higher rpm. It also smokes really bad at …
Mercury 300 2020 Not rated yet
Hello, at the end of a days boating we bring the engines to an out of the water position, so the props are clear of the water line, we then fresh water …
2017 Mercury 150 4 Stroke Not rated yet
Trim gauge not working. Shows down all of the time. Turn key off gauge jumps to up position. Turn key on gauge goes to down position. I have changed the …
1995 135 Mercury Black Max G179207 Not rated yet
Motor runs fine in backyard tub. Ran it for 15 min. No alarm. Take it to the lake (second time) and as soon as I try to go alarm at shift/throttle begins …
50 hp 3 cyl oil injected, 1996 I think! Mercury Not rated yet
starts, runs good, but later pulls down like a heavy load on it. no sputtering or back fire but down to about 2500 rpm.
2006 mercury 115 90hp efi Not rated yet
Flywheel won't turn freely during starting, replaced starter already. Checked compression, cylinder 3 is 120psi vs others at 150psi. Spark plugs are …
mercury 75ELPT0 1998 Not rated yet
My 2 stroke 75 Hp Mercury ran well when I put it away last fall. I just got it out of storage and replaced the water pump. It was hard to start so I cleaned …
Mercury 40hp 4 stroke 2016 Not rated yet
Ok to start out I have a vessel view on my 40hp im hoping that someone is familiar with them the vessel view is telling me that the ecu has detected a …
Mercury 40hp 4 stroke 2017 Not rated yet
Ok fist of all I have a vessel view hooked up to my motor the vessel view is telling me that the ecm is detected a problem when trying to output a signal …
Mercury 60 ELPTO 2002 Not rated yet
No spark on no.1 top coil. Have swapped coils around and still no spark at top position. Engine is 3 cylinder. I am based in North Wales UK.
The fault …
Mercury 90 ELPT4 (1F90412YD) Not rated yet
I have an engine that was overheating. I dont know if that problem has gone but, when I sit about 3200rpm the engine will operate fine for 5 minutes roughly, …
`Mercury Marine outboard,2006.60ELPTEFI. serial # 1C041880 Not rated yet
...Intermittent Problem..
...At any time engine drops to around 3 grand.
... starts chugging.
.. I noticed large 2" air bubbles leaving exhaust …
Mercury 115hp tower of power il6. 1987 Not rated yet
Having a few problems with my tower of power. It starts ok, but i need to give it a little throttle to do it. Its struggling to stay in idle and get in …
og421963 Not rated yet
1996 mariner 115 engine wont go past 2500 rpm fuel pump rebuilt accelerator pump rebuilt new inline filter on accelerater
2003 XR6 150 Not rated yet
I've a carbureted 2-stroke 2003 XR6 150 with an open hole right below the #2 plug on the port side. Am I correct in thinking this hole is for a head …
optimax 200 dfi 2001 Not rated yet
I just purchased this boat (2002 lund pro v 1900 ifs) and upon a more thorough inspection I found the wire from the alternator to a solenoid has melted …
40 hp mercury 4 stroke 2004 Not rated yet
when i launch it starts fine and runs good for a while when i shut it off to troll and restart it starts then runs rough put new fuel filter in different …
mercury 25hp el 2015 Not rated yet
Ran fine all morning. Was running down the lake about 3/4 throttle and I hear a pop, engine dies and the t-handle from the pull start which I've never …
1979 mercury outboard 115 motor Not rated yet
I have a part that I am unsure of what it is. It is located behind the battery.my husband says it a voltage regulator.
Mercury 30hp F30ELPT 1A30413EK Not rated yet
Starts and runs fine until I shut it off then it won't restart when warm. If I allow it to cool down for 30 minutes it starts and runs fine again
2006 Mercury 50hp 2-stroke, Model 1050412FD Not rated yet
Recently purchased a 2007 Bass Tracker 175 TXW with a 2006 Mercury 50hp, 2-stroke. Seller claimed it had recently been serviced. First time in the water, …
Mercury 175 Verado Not rated yet
Water pressure is lower than the other engine and the engine temp stays low and not up to temp. Water comes out right above the waterline on backside of …
Mercury 7.5 hp 1986ish? Not rated yet
I am trying to find the year of this motor,the serial number on the id tag is A196451 and all of the charts that i have looked at does not include that …
Mercury 25 HP EFI 4 stroke 3 cylinder 2011 Not rated yet
I think I messed up the spark plug wire sequence while doing maintenance but cannot find it anywhere. Just wondering if anyone can tell me what it is? …
Mercury Classic 50 (45hp) Serial 0B161091 Not rated yet
Hello! Pulled my Tracker out of storage recently and was ready to get out on the lake this evening. When I connected the batteries, the trim went straight …
mercury, 90elpto, 2005 Not rated yet
I found milky oil in my lower unit along with a good bit of black oil. There was no actual clear water in the flow when draining. It looks like the bottom …
2007 Mercury 250 pro xs 2 stroke Not rated yet
I just purchased the boat from my dad so I know it's been taken care of but anyways when he bought it the powerhead was replaced with a brand new 2013 …
2007 Mercury 250 pro xs 2 stroke Not rated yet
I just purchased the boat from my dad so I know it's been taken care of but anyways when he bought it the powerhead was replaced with a brand new 2013 …
Mercury 225 efi 2001 Not rated yet
Very sporadic alarm.
May go into alarm, beep, beep beep or not, when ignition turned on.
This can happen while on the trailer without being started. …
Mercury 50HP 1985 Not rated yet
Sometimes the engine starts easy, and sometimes everything has to be just right (throttle, choke). When it starts easy, it'll idle just fine. If it starts …
2008 150 EFI2.5L 1B690527 Not rated yet
First time out this year and motor ran fine. When I got ready to leave motor went into limp mode (maxed out at 2000 rpm) and 4 beeps every 2 minutes alarm …
Mercury 250 pro xs 2020 Not rated yet
Hello I just swapped all my batteries over to impulse lithium I own a 2020 triton 21 pro elite with a mercury 250 pro XS I have 2 HDS live 12's at the …
1999 Mercury XR6 150 Not rated yet
I set my static timing like this:
Sticker says Idle 4 ATDC WOT 20 BTDC
Remove & ground spark plugs
Unhook White/Blk wire
Set Idle to 4 ATDC
Set WOT …
Mercury optimax 90hp dfi 2014 Not rated yet
Hi, trying to identify the sensor that is tucked in behind the oil tank, appears to have the fast idle cable around a linkage setup connected to a throttle …
Merc 50hpb Bigfoot 4 Cyl 4 Stroke 2001 Not rated yet
Not firing on all 4 cyl under power. Idles fine, and sounds normal when rev'd out of gear.
Just finished rebuilding carbs. Replaced all fuel circuit components …
mercury200,1993 Not rated yet
I have a 1992zx175 skeeter bass boat with a 200 mercury.I was going up the river,and all of a sudden the alarm under the dash goes off.I stopped the boat …
Mercury 200XL. Year 2020. 6 cylinder Not rated yet
I have less than 80 hours on this motor and at a steady RPM/speed in calm water the RPMS jump 250-300 RPMS for 2-3 sec and the boat speeds up and then …
1998 115 2 stroke Not rated yet
Motor was running great, then an alarm would intermittently go off. I could get it to stop by trimming the engine up. I figured this was due to the oil …
2007 25 hp mercury 4 stroke efi f25elpt s/n or185161 Not rated yet
poor wot rpm, I am working on this engine and it is giving me fits. Under load this engine will only reach about 2500 rpm at wot. With the fast idle I …
Mercury 50elp 2010 Not rated yet
This motor is new to me, and came with nothing in the way of instrumentation save for a tach.
This I don't like, I like to monitor things.
The easiest …
Mercury 18XD 1984? 1987? ser. OA 106962 Not rated yet
all signs point to a powerhead swap while in shop to sell. Have 125/120 compression, coils and trigger from known running engine, new stator, new switchbox …
Mercury, 80hp, 1988 3 cylinder 2 stroke Not rated yet
The motor starts fine but the bottom 2 carbs have little to no vacuum at or just above ide. All elect. components are new ie... Stator, trigger, coils, …
2012 Mercury Bigfoot 60hp EFI Serial 1C212594 Model 1A60453BZ Not rated yet
When just in gear the motor will intermittently "shudder". There's no pattern ie. every 5 minutes, nor does it "shudder" for the same amount of time. If …
1983 Mercury 50HP 2-Strok Outboard – S/N: 6307834 – Propeller Question Not rated yet
I’m trying to replace the propeller on my Mercury outboard. I purchased a 24-foot Sun Tracker Party Barge pontoon used. The Mercury outboard had a 48-87818-9, …
Mercury 60 hp 4 stroke efi 2004 Bigfoot 0T928101 Not rated yet
HP fuel pump doesn't come on. No voltage to hp fuel pump connector on top of VST when IGN on. No voltage to what wires I traced to 20 amp fuse in the 4 …
2006 50hp 4 stroke fuel injected Not rated yet
Just picked up a 2006 pontoon with a 2006 50hp 4 stroke fuel injected motor. 1st time on water, motor ran really smooth but shift/throttle cable in reverse …
Mariner 2 Stroke 90 horsepower Not rated yet
Please see pic of water oil mixture coming out of lower unit. Cannot tell yet, but almost feels like threaded screw hole. We just had boat out on water …
Mercury 2015 75 hp efi Not rated yet
Engine slow to start and then shakes when running and cuts out after a few minutes. Checked spark plugs look ok, changed low pressuse fuel filter. Connected …
Mercury, 125hp, 1994 Not rated yet
Tilt/Trim Motor internal Wiring
The motor is electrically and mechanically good but some of the internal coil and brush connections have corroded and …
Mercury 20hp 2013 Not rated yet
hot soak won't start
starts and runs fine cold.
after shutting down to fish for 1/2 hr
or so won't restart.
replaced coil 2 years ago.
Mercury 90ELPT 2014 2 STROKE Not rated yet
Hi, thanks in advance. Motor went underwater in recent flooding, within 48 hours plug were removed, water removed from cylinders, fuel replaced, fuel/water …
65 mercury 350 Not rated yet
No spark to engine. It has power to the harness plug that goes to the side of the engine and when testing that plug there is power to 2 of the small wires …
Mercury 25, 2 stroke,2001, OT180631 ,short shaft Not rated yet
My motor runs nicely .however there is a black oily sludge in the bottom half of the engine cover. I had the lower end rebuilt a few years back and this …
mercury, 40 force, 1994 Not rated yet
I am needing a wiring diagram for engine. I was told it has had a red stator installed. I have a new power pack to install and want to make sure wiring …
Mercury, 90 hp inline 6, 1986 Not rated yet
So the lower unit was not holding lower unit oil.
I did not pull the lower unit to change the prop shaft seals as I didnt think it needed it and I didnt …
Mercury xd 18 Old Not rated yet
I can only get about 5mph out of the motor. It has in the past pushed 20mph but now it won't go into the higher horsepower. Once in a while it will spurt …
1996 ELPTO 2X2 Won't idle down Not rated yet
Can't get idle below 2000 rpm's after carb cleaning and new control box.I don't want to start adjusting timing settings and the idle position doesnt touch …
1997 Mercury EFI Not rated yet
Alarm beeps when accelerating. Not a constant beep, but a constant beeping. Once the boat planes out the alarm stops. Poppet valve has been checked and …
1985 Mercury 75 hp 4 cylinder, 2 stroke Not rated yet
When I'm running the motor at any speed, it seemed to be running on 3 cylinders and then out of know where, it would intermittently catch the 4th cylinder …
150 verado mercury year 2007 OP473338 Not rated yet
The engine starts properly
When raising the speed (around 1600 - 2200) it loses power with an audible signal ..
Sometimes, and rarely works in the office …
2017 Mercury 90 four stroke command thrust Not rated yet
Hello, after changing Out the water pump and thermostat the motor won’t start.all I get is a sporadic buzzing sound from a relay.even under the dash when …
Mercury Tracker 40hp 2001 Not rated yet
have no fire on top cylinder, reversed the coils and both have fire on bottom cylinder but nothing on top with either, traced all wires and it seems the …
Mercury optimax 2013 Not rated yet
Engine will start but will idle rough like it is missing but will run fine in higher rpms
Mercury 9.9EXLHC Long Shaft 2016 Not rated yet
I have a new-to-me Merc 9.9 long shaft. Time for me to replace the impeller. I am told that there are some "tricks" I need to know to get to the impeller …
2012 Mercury 2-stroke 150 pro xs Not rated yet
Engine will start and run. Then you shut it off and it will not start? Have replaced both pumps, checked all air and fuel pressures, new ECU, changed all …
Mercury proXS 150 2015 Not rated yet
My motor continues to tear fuel rail diaphrams. I want a permanent fix for this issue. My outboard has left me stranded numerous times and it costs me …
2000 Mercury 9.9 2 stroke. Not rated yet
Ignition won't advance stays at low rpm. I can spin by hand and it takes off fine.
2018 Mercury 90 CT Not rated yet
- Rough idle (engine shakes)
- Engine picks up speed or surges occasionally without throttle input when idling in gear.
- Vessel View 403 tachometer …
Mercury F100 PT 2006 Not rated yet
Hi I was asked, by a friend to assist with changing the impeller/water pump on his motor. Done that and its pumping water as it should.
Took the boat …
mercury 8 hp early 90 ties or late 80 ties Not rated yet
readable serial number 3193316. the recoil starter is not recoiling and the part is no longer available. can the flywheel attachment be upgradable to …
2018 Mercury 25 efi Not rated yet
I am replacing upper and lower motor mounts. What wrench size is the flywheel nut? Also, is the Mercury flywheel puller necessary? I have a automotive …
Mercury 4 stroke 115 h.p. 2005 Not rated yet
Was running fine at 4000 rpm and started missing and lost power. Idled but shook and missed bad. Flooded bottom cylinder.starts fine but wont rev up.changed …
Mercury 4 stroke 25 efi 2010 Not rated yet
wide open rpm drops as engine warms up. Example early in the morning 5300 rpm, no problem. Run 10 minutes down the lake and rpm drops to 5200. Stop …
2007 mercury 250 pro xs Not rated yet
lower unit makes a knocking sound when slowing down at full or 3/4 trim. does not do it if I slow down and trim down at the same time
2014 Mercury Pro XS 250 Not rated yet
Installed anew trim sending unit and can’t seem to get it adjusted. I can manually turn the sending unit tab by hand and the gauge needle will go all the …
Mercury 2003 25ELPT 4S Not rated yet
I bought motor cheep and I ended up having to rebuild it because it had a bad rod bearing. I installed all new rod bearings and main crank bearings. I …
Mercury, 150 efi 2 stroke 2007 Not rated yet
The electronic oil pump leaks from the solenoid cap in way of the electrical plug. Recently replaced inline oil filter and brass fitting to the motor …
2020 Mercury 20 hp efi Not rated yet
Won’t start in cold weather with electric start. It will start with pull rope.
2001 Mercury outboard 200 saltwater series Not rated yet
Will not get on plane. Unfortunately my boat and motor sat for 2 years. I drained tank put new non ethanol fuel and new fuel filter/separator. it idles …
mercury 50hp carb four stroke 2000 Not rated yet
Motor runs fine at idle and in gear. when i cruise at full throttle for 35-45 minutes rpm drops from 5000 rpm to 3000 rpm and feels like cylinder misfiring, …
2005 Merc 250hp Verado Outboard Not rated yet
I have twin motors and at times, one engine will start and the other won’t. Both engines have approximately 550 hours on them. What can I do?
Thank …
Mercury pro xs 175 2021 Not rated yet
Motor runs fine until 4200 rpm and then the motor starts hopping out the water. Besides that below 4200 rpms it runs fine. I don’t know if it’s hitting …
1985 Mercury 50hp Not rated yet
I changed the impeller with the shift lever in neutral. When I put the lower unit back together, all I have is neutral. I have taken it apart twice with …
Mercury 40 hp 3 cylinder 4 stroke EFI 2009 Not rated yet
When I cruise at a fixed rpm, say 2600 rpm, for about an hour the motor starts to gradually slow down then surges and will keep doing that until I move …
Mercury 35 HP 1987 Not rated yet
To save my life I cannot get the top part of the cowling to go back in place! I have removed and replaced it before but for some reason I had to give up …
mercury verado 150 hp 2008 Not rated yet
motor runs good. when you crank it up it beeps 6 times. what does that mean and is it safe to run it.
2013 mercury 60 hp Not rated yet
Drained lower unit, only about 6 ounces of slightly milky fluid came out. When I refilled it it only held about 15 ounces. I have the larger lower unit …
Mercury 0g268413 Not rated yet
What trim sender is needed for starboard side installation Tracker Mariner 40hp 2 cycle 4 cylinder 0G268413. I though I had the right one 8M0098273. This …
Mercury, 40 ELPTO, 2002 (OT425099) Not rated yet
It has a high and rough idle that can't be adjusted lower without the engine stalling. The idle is too high to put it in gear. When I thread in the idle …
mercury 150 efi 1996 Not rated yet
Overheated had rebuilt power head installed . All is fine except it wont go over 4200 rpms where i was getting 5500 rpms ?
mercury 25 hp efi 2006 Not rated yet
water pump not working and have checked lines and impeller. Can blow air backwards thru system.
mercury 75 HP 4 stroke 2017 Not rated yet
Just bought a 2017 Tracker Proguide 16VC with a 75 HP 4 stroke Merc on it.
Idles and accelerates fine in neutral, but under a load the engine has a …
mercury 2021 Verado 300 hp Not rated yet
rpms running 5500 to 5600 do I need to reduce propeller pitch. Boston Whale 280 Vantage with twin Mercury Verado 300's
mercury pro xs 225hp year 2021 Not rated yet
what oil temp would you be running at at wide open? mercury only goes by oil pressure, i run anywhere from 140f to over 200f. thanks
mercury efi 150 1996 Not rated yet
At full speed the alarm go off it i back off the throttle just a little it stops i put a new water pump in still does the same thing
1988 Mercury 135 black max Not rated yet
Replaced stator, trigger and rectifier and now engine starts high rpms. Do I have some wires crossed?
Mercury, 30ELPT 4s, 2002 Not rated yet
I changed the oil, filter, and plugs. We too the boat on a weekend river trip and the boat was using more fuel than normal and running rough. Checked the …
mercury, 40hp 3 cylinder, 2019 Not rated yet
cant locate the spark plugs. Are they under the coils??
mercury pro xs 225hp,year 2021 Not rated yet
does anyone know what oil temp should read, mind has been from 160f to as high as 200f? data was taken from vesselview, lots on water but not oil.
Mercury 15 hp 4 stroke 1998 Not rated yet
Oil in fuel filter after fuel pump. Bad fuel pump ?? Thanks Mike
mercury pro xs 225hp year 2021 Not rated yet
anyone know what normal operating temp should be for the oil?
I'm reading from 160f to over 205f at times. i get info this from vesselview.
Mercury 40 elpto 1997 2 stroke Not rated yet
Slow to pick up rpms but runs out good bogs at hard acceleration
2013 Mercury 60hp 4 stroke Not rated yet
Bought at a government auction 2013 60 4 stroke on a 1650 Alumacraft Tunnel Hull sat for over a year,had minor Hull damage was flipped in a storm is why …
Mercury 90 hp 4 stroke, 2009, Model #1F90413HD SR@1B759924 Not rated yet
I recently purchased a 25' Pontoon boat, before launching it I was changing the oil, I pulled the filter, it looked as though no oil had been filtered,it …
2005 mercury 150efi 2 stroke Not rated yet
made a couple of attempts to replace the impeller. problem was getting lower unit aligned . First attempt, motor ran fine, nothing out the pee valve. second …
1996 Mercury 40 hp 2 stroke 4 cylinder on a Bass Tracker Not rated yet
Can't get it started I have taken carbs off at least 6 times soaked in Berryman carb cleaner also soaked in gas with sea foam Rebuilt the fuel pump seems …
Mercury Optimax 225hp 2001 Not rated yet
Throttle does not always reduce rpms when demanded. Just replaced the tps with a new oem one to no avail. trying to sell and can't even drive it safely...Please …
Mercury, 1F20311EK, 2016 Not rated yet
My 2016 20 HP 4 stoke Motor is leaking gas through a bypass tube from the carb that drains into the water from the housing around the lower unit. I’ve …
Mercury 75hp 2003 Not rated yet
Hello all, I purchased my boat used about 2 years ago. I wasn't able to put it on the water due to covid shutting down the state parks here. Anyways, I …
2021 4 stroke 90 hp Mercury Not rated yet
New Tracker Pro Guide 16 this past May. No issues until yesterday when it almost sounded like the lower unit had neutralized on a tight turn at about 4500 …
Mercury ProXS 200 Hp 2021 Not rated yet
They propped it wit a 15 inch 18 pitch 3 blade and I could only get 5400 RPM with just myself in the boat manually trimming it as high as I could. I took …
Mercury 150 2014 4s thermostat advice Not rated yet
Hi. Opened my thermostat housing today and removed thermostat from the retainer and spring to inspect it.
To my surprise the pin was loose from the …
5 ho 2020 propane powered 4 stroke Not rated yet
Let someone use my dinghy they took the motor off and pulled it due to bad weather , they laid the engine on the wrong side and oil ran out of it should …
mercury1995 115hp 4cylinder oil injected Not rated yet
Ran very erratic,would not idle.Rebuilt fuel pump and changed accelerator pump because it was leaking,all to no avail.It started after doing those two …
mercury 15/ 4 stroke 1F16412HL / OR516487 Not rated yet
Water does not flow through the engine at the starting it may flow through then stop. does it have a thermostat that only opens when the engine gets hot …
40 hp efi mercury. Model 1a40413bz. Year 2014 Not rated yet
Hi. Is there anyway to check for trouble codes before I purchase the vessel view. On idle the engine will jump up 2 or 3 hundred rpm. Runs good other than …
2002 mercury 250 xxl Not rated yet
I was having minor starting ,running problems. figured it was due for a tune. marina changed water filters and put in new set of oem ngk br8hs sparkplugs. …
Mercury 115 4stroke 2018 Not rated yet
Can’t get the upper cowling off. Latch does not release when pulled and I am afraid to break it
2016 75 hp Mercury outboard Not rated yet
Engine cuts out after an hour and then above 3,000 rpm otherwise runs all day 2,500 and below
250 pro xs, 1251p73bd, 2018 Not rated yet
The motor will not run over 5400 rpm. I have tried 5 different props.
Mercury 4 stroke 90 hp 2001 carberatored Not rated yet
Well motor runs and starts great except when I’m running at 2200 it starts to really running rough like cylinders dropping out and sometime stalls but …
Mercury 115 Four Stroke EFI 2011 Not rated yet
A little history, The motor had a major over heat and was rebuilt by a dealer. Said dealer after rebuild couldn't get the motor to start. On to second …
Mercury 9.9 efi 2021 Not rated yet
When I start the engine steam comes out the exhaust. I talked to a mechanic at the dealership where I bought the engine and he says this is normal and …
Mercury optimax 90 2008 Not rated yet
Recently the boat started going half speed it used to run 30mph at 5800 rpm now it runs about 17mph at 5400 rpm. I haven’t changed anything. This is on …
2003 Mercury 175HP optimal Not rated yet
Won’t go over 7mph when you get on the throttle it sounds bogged down.
2010 70 hp mercury outboard Not rated yet
Hi, I work at a marina in Acworth, Georgia. The 2010 70 hp mercury outboard powers a 2010 24 foot bentley pontoon boat. Upon selling the boat, we took …
Mercury 75 hp 2000 year Not rated yet
Im not too familiar with outboards, this is my first, others have been in out board. At idle ive got a rough idle, but when accelerating seems ok. Havent …
1998 25 hp mercury 4 stroke big foot Not rated yet
I changed the ignition switch and now it wont start at the key. If I turn the key to the run position it will start with jumping the solenoid. Is there …
Mercury outbparf 80jet/115hp 0G197292 Not rated yet
Starts right up, idles good, starts off like a leaf blower playing catch up to get to top speed. At top speed it has a miss you can hear. It's on and off …
Mercury 75hp 4 stroke 2004 Not rated yet
Looking at buying my buddies boat C Dory 22 hasn’t run it in years. Cleaned fuel take, replaced all fuel lines and cleaned out carbs. Fired right up but …
mercury 115 4 cylinder 1986 Not rated yet
I lost 4 magnets on flywheel which messed up the Stator as well. I found the magnets and had the flywheel sandblasted to bare clean metel and had a marine …
Mercury 1982 40hp two stroke Not rated yet
Did all of these engines come from the factory with a thermostat? The ipl shows some parts that are used without a thermostat.
Mercury 4 Stroke 60 HP Bigfoot 2011 Not rated yet
Motor doesn’t seem to be getting up to WOT. Lots of play in throttle cable once forward gear is engaged before the motor actually throttles up. Also idles …
2021 Mercury 90 hp on Tracker Boat Not rated yet
The control will not stay on RPM. It starts to slow down as soon as I take my hand off the control.
2008 Mercury 115 Optimax EFI Not rated yet
Hi, my name is Mike. I am not an outboard guy but I have been doing basic checks on this engine. Any help would be greatly appreciated.
The engine started …
2002 Mercury 125EXLPTO, Serial number 0T552683 Not rated yet
I purchased this motor used and having an issue with it not reaching max rpms when under load. It gets to 4000 rpms and won't go over that. It sounds …
Mercury 9.8 6117998 Not rated yet
My engine breaks up while running at idle, I installed 2 new plugs. Carb is clean.
Mercury 15hp 2 stroke 2002 Not rated yet
I have a Mercury 25hp 2 stroke, 2002 model. This motor is manual start. A friend gave me a similar motor, non working, with electric start. I would …
Mercury 1F06201EL Not rated yet
My 6hp Mercury packing up on me halfway out of Keyhaven (UK) harbour. Fortunately, the direction I was pointing in at the time meant my centreboard got …
Mercury two stroke 4hp 2001 Not rated yet
Forward and reverse gears will both engage and run at idle speed, however when I increase the throttle the speed picks up a little then that’s it, if I …
Mercury 25hp 2007 Not rated yet
Having problems with rough idle, will not rev wot above 48xxrpm, hard to start after engine is warm. The motor has ~80 hours just had a 100 hour service; …
2007 Mercury 25hp 4 stroke, tiller electric start outboard motor Not rated yet
Hello, I just got my motor out of the shop for its's 100 hour service; water pump, new plugs, fuel filter, oil/filter change, lower unit oil changed. Took …
Mercury 60 hp 2013 Not rated yet
On start up cold engine goes straight to 6000 rpm with throttle in nuetral
Mercury Outboard 80hp 1988 Not rated yet
Hello to all, I've got a weird issue with my 1988 80hp Mercury Outboard. The engine has very low hrs on it and runs great. A month ago, I installed a …
Mercury 150 EFI Saltwater edition 2002 Not rated yet
I just purchased a boat with twin 150s. Both motors run great, but they will run at most 5 lbs of water pressure on the guage. I repalced both impellers …
Mercury, 115 efi, 2006 Not rated yet
I have a strange problem with my 2006 mercury 115 hp efi (not optimax). It starts fine, idles fine. It will run fine up to about 2800 rpm's and it will …
2002 50hp 4 stroke Not rated yet
can you swap a 2002 50 hp 4 stroke with a 98 90 hp 2 stoke without swapping control box and cables
Mercury 115 hp efi 2006 Not rated yet
I have a strange problem. First off, I had a problem last year and they replaced the entire (?) fuel injection system and it didn't fix the problem. Them …
2018 mercury 115 outboard Not rated yet
losing water pressure at higher RPMs, slow down engine to an idle, trottle back up, water pressure comes back for short time, I changed empeller, hook …
115hp/ 80ph jet. 2016, 1F8047J10 Model Not rated yet
After running up river on plain for around 15 minutes, engine starts cutting out like running out of fuel. it will idle fine. I try to go again and it …
Mercury 75hp model 1F75412YD 1999 serial 0T278233 Not rated yet
Fuel coming out intake manifold on cyl 1 when cranking, will not start, carb 1 rebuilt,if pinching off fuel line to #1 carb, unit will run on other 3 carbs. …
Mercury model 1F754131D year 2015 Not rated yet
Engine starts and idles, but bogs down and misses when trying to accelerate. Pumped gas out of tank and filled with new gas, replaced inline gas filter …
70hp, Belgian, serial 9341xxx pre 83 Not rated yet
Hello everyone. UK based user, initially looking for service info, like lower gear case oil type, quantity, also user operation manual would help greatly …
mercury 7.5 hp 2stroke twin prob 1980s Not rated yet
engine is fantastic starts fine revs out on bench, put on back of 3mrib and will only pull 1/2 revs somebody has put a 9" prop which only just clears cavatation …
Mercury 2006 115ELPT4S, Ser-1B357696 Not rated yet
After removing the lower unit to change the impeller, I re-installed the lower unit. While installing the LU, itdidn't quite push up all the way until …
New, just bought, Mercury 60hp 4stroke but a 2016 model Not rated yet
New motor. Did the brake in following the instructions. After 10 hrs changed the oil. The motor improved during brake in, is now more powerfull but it …
2006 mercury 115 elpto serial #1B364884 Not rated yet
engine runs fine up to 4000 rpm alarm sounds and motor shuts down put it in neutral and then back in gear runs fine again up to 4000 rpm could this be …
Mercury,2007 90 HP 2 stroke Not rated yet
engine misses at idle and low speeds,under 4000 rpm, had carbs cleaned, new plugs,fresh gas, this is an oil injected motor, ran for a couple of hours, …
1988 115 2 Stroke - Wont go over 2800 RPM without tac bouncing/cutting power. Not rated yet
1988 2 stroke 115. Motor idles and runs well but if I try to take it over 2800RPMS-WOT, the tac kind of bounces and motor wont go over 4100 on a 17' Tahiti …
2002 Mercury 225 EFI 3.0 Not rated yet
I stripped the plastic screw head that releases the pressure on the power trim motor. I drilled into the head of the screw in trying to get it to turn …
Mercury 225 Optimax Not rated yet
Need help! We are on vacation - first day and our motor is beeping. Started with 4 beeps, stops for 5 or so minutes, but now it’s a constant beeping when …
Mercury Belgian 15hp 2 stroke, 1994 Not rated yet
The outboard won't shift into reverse. When the linkage is disconnected from the shift rod from the lower unit, it'll click through F-N-R just fine. Manually …
2001 Mercury Optimax Not rated yet
I was going along in deep water at 3/4 throttle. The engine HAD been running smoothly prior to and at the time. Suddenly and without warning, I had no …
2001 Mercury Optimax Not rated yet
I was going along in deep water at 3/4 throttle. The engine HAD been running smoothly prior to and at the time. Suddenly and without warning, I had no …
Mercury 70hp 1988 Not rated yet
Hi, I'm a newer boat owner of about 3 months now. I've been on the water every weekend and as much as possible during the week. When I first bought it, …
Mercury 60 HP four stroke 2011 Not rated yet
Gearbox won't shift into reverse. Removed lower unit and gear selector shaft will turn to neutral and forward gear but will not turn to reverse. Any help …
Mercury 2014 30 hp Not rated yet
Overheating, mechanics have replaced thermostat and impeller. Problem still exists. There is water coming out the hole in the side. The alarm goes …
Mercury 2014 30 hp Not rated yet
Overheating, mechanics have replaced thermostat and impeller. Problem still exists. There is water coming out the hole in the side. The alarm goes …
Mercury 115 efi 4stroke. 2002 year Not rated yet
Rough idle after 3000 rpm it's quits running and the priming bulb does not get hard. I have changed plugs fuel lines filters and compres
sion check
Mercury, 1125422w, 2000 Not rated yet
Starts great, backs up fine but when I throttle forward it will stall, low throttle can wait several minutes too many minutes before it kicks in
mercury 2016 40 hp outboard Not rated yet
I'm changing the oil, tuneup etc. Tilted the engine, removed the oil drain plug and vent...
NO OIL COMES OUT! Dipstick shows that it's full.
anyone …
1999 225 efi Not rated yet
I have replaced:
Bad coil pack
Stator
crank position sensor
Ignition and Fuel packs
Grounds to everything
Cable from the battery
Alternator
Water …
Mercury 25hp jet, 2017 Not rated yet
I have a 2017 25hp Mercury jet. It keeps going in to lower power mode, I can turn it off and back on and it will run fine sometimes. As long as it is at …
2016 mercury 250 proxs Not rated yet
Started with a bad fuel /water seperator sensor. Replaced that then motor would run for a few minutes then die. Replaced the lift fuel pump. Same thing …
Mercury 25 HP, 1985 Not rated yet
I have a Mercury 25 HP motor with a 13 pitch Solas prop, (long shaft) on a 17 ft Lowe aluminum fishing boat. Prop tends to spin and lose bite with faster …
Mercury 115hp efi 2003 Not rated yet
Hi, I'll get to the point. turned the ignition on, starter engages, motor turns over, doesn't fire up, an alarm sounds. any ideas what it might be?
has …
1991 150hp Mercury xr4 2 stroke Not rated yet
The motor will run great sometimes with not issues.
Leave set for a short time and restart the engine and take off and it will loose power.
This could …
1980 mercury 50hp Not rated yet
I am wondering if the keyway in the crank at the fly wheel line up with any timing marks ,some idiot (me) disassembled the flywheel and the crank moved, …
Mercury four stroke 150 HP 2017 Not rated yet
loses speed. on pontoon speed had been able to 35 MPH+ but now only does 25 MPH. yearly maintenance/winterizing done
Mercury 90 hp 2 stroke ELPHO 2002 Not rated yet
Motor partiallly locked up. Can only manually turn flywheel 3/4 turn left or right.. grease coming out towards bottom. Probably looking at a rebuild where …
Mercury 9.9 Prokicker 2011 Not rated yet
My Prokicker 9.9 motor is on a small 14 foot pontoon boat and it has a 10X7 prokicker propeller and at WOT it will not exceed 2500 RPMs. So I tried a 4 …
Mercury, 150XL, 1999 Not rated yet
After running for a while at near full throttle a continuous alarm goes off (which according to my manual indicates overheating) but according to my gage …
2010 mercury 90 hp efi Not rated yet
Critical alarm. Check engine alarm. At startup get an initial beep with a constant beep for 5-6 seconds. Thinking it might be oil pump. Bought a vessal …
Mercury 1125422w 2000 Not rated yet
Starts great, but low rpms and no speed then cuts off as you try to increase throttle
Mercury, 60hp 4 Strole EFI, 2013 Not rated yet
During removal of the lower cowl two of the screws would spin, but not come out. It feels as if the nuts, embedded in the other side of the cowl, are spinning. …
1C606744 Not rated yet
steering on pontoon is really tight, I cleaned out the remote transom tube and still tight, the bracket on the 50 hp mercury 4 cyl motor has 3 or4 holes …
Mercury 9.9 hp standard pull start 4 stroke 209cc year 2006 Not rated yet
its a very reliable, fault free engine with few hours until day before yesterday when it wouldn't start. No spark and fault finally traced back to the …
96 225 hp outboard Not rated yet
Will accelerate almost to plane then drop rpm to 2800 to 3000, if i idle it will do the same thing again and again, 5000 rpm until almost on plane …
Mercury XR6 1992 Not rated yet
I presently have NGK BU8H gapless plugs in my outboard. It has been fouling plugs lately. Ive read on other forums that i ran into accidently that i can …
mercury 90 hp four stroke, 2003 90elpt 4s Not rated yet
Only fires on 2 cylinders, swapped coils, no change. tried different ecm-cdi, no change
Mercury 25 four stroke big foot 2003 Not rated yet
Run wot 5500 rmp for two hours. Come in to no wake zone at idle speed,motor dies in 15 second. Cranks but no spark. Next morning starts right up. Motor …
Mercury ELPT 4S 4 stroke 40 hp ELPT 4S 2002 Not rated yet
engine won't start without throttle advanced won't idle below 1000 rpm . dies as soon as it's put in gear. Fuel bulb is hard. Using ethenol free rec. …
Mercury 35 Serial Number 0C133282 (I'm guessing 1987?) Not rated yet
My old pontoon has an old Merc 35 with power trim. The problem started with no spark and I changed switch box and it seemed to fix it while in the yard …
mercury 2018 200 pro xs 4.6l Not rated yet
motor developed a miss a couple of weeks ago i have vessel view mobile installed and it shows no codes present riding on the water you can feel the miss …
2014 mercury 225 pro Xs Not rated yet
The air supply hose keeps popping off and shutting my motor off
New 2021 merc 300 DTC. 3B045955 Not rated yet
Smokes on most but not all startups I believe not on cold start It starts perfect no other issues no stumbling no miss all good other than that
Mercury 75 hp 4 stroke 2016 2B226236 / ME75ELTT4S Not rated yet
Engine begins to run rough, more like cutting out after about an hour of running at around 2500-3000 rpm, smooths out if I lower eng. speed right away …
Mercury Optimax 90 - 2012 Not rated yet
Had an issue getting the 4 beep warning every 2 minutes. Took it into the shop and they ended up replacing the oil tank (that wasn't it) and the separator …
Mercury, 35hp, 1984 Not rated yet
When I pump the primer bulb, gasoline leaks from the front of the carburetor.
2014 Mercury Verado 250 Outboard Not rated yet
Never had any issues but was our last weekend and at a higher speed the motor alarmed and shut down. Anyone know what would cause that? At one point I …
Mercury marine 2002 opti 225L OT579064 Not rated yet
If I let the engine sit for more than 15 minutes. When starting it it cranks for approx 8 to 12 sec. then starts up and revs up over 3000 RPMs. It will …
Mercury 90ELPTO 2001 Not rated yet
Engine runs rough and pops through exhaust. When I remove the top plug wire while running, the engine idle doesn't change. Rebuilt carbs and fuel pump. …
Mercury Mariner 60 hp EFI 2003 Not rated yet
I'm getting the overheat/high volt/low oil pressure alarm (long tone) and the engine shudders and slows (goes into limp home mode shutting 2 cylinders …
2006 Mercury 75hp 2 stroke Not rated yet
Starts fine when I get out to bay to open it up (17 whaler) it doesnt go fast I changed the water seperator nothing then next day changed the small filter …
Mercury 90hp 4 stroke efi with command thrust Not rated yet
Intermittent squealing when at low rpm or idle, especially when turned full to starboard. I think it is in lower cowl because I can feel the vibration …
Mercury, 25ELPT-4s, 2001 Not rated yet
The Guardian alarm sounds continuously after some use and reduces power. The outlet water is warm, but not hot and the head is not hot. I’ve disconnected …
Mercury Marine serial nu 06808121 25El 1999 2 stroke Not rated yet
After start my motor getting on the very high rpm it’s self finally to the self ignition. What could be the issue? Thermostat looks to me ok
mercury 30 hp 2015 Not rated yet
every two to three minutes I can feel a soft skip. at any RPMs. change the plugs, coils. still does it. Kind of hard to trouble-shoot when it doesn't do …
4 stroke Mercury 75 hp 2000 Not rated yet
The engine starts good cold. When I get to destination and stop, shut off engine and leave it for a short time it lags like low battery on the first start …
mercury 90 forces efi 2008 Not rated yet
si je dépasse 4000 rpm le moteur coupe (électrique)il repart et si je le maintient en dessous de 4000rpm il va bien et n'arrete pas ???
30HP 4 stroke EFI Not rated yet
Motor will start and idle fine, water pump working (spitting out water), runs forward and back at idle speed. Motor was running at full speed pulling …
Mercury 3cyl 2 cycle 40 hp 2005 Not rated yet
Recently purchased a sweetwater 220 with a 40 hp merc on it. I had cavitation issues and installed a "whale tail" and it made a decent difference. I wasnt …
1988 mercury mariner 70 HP Not rated yet
The lock washer on the steering bracket set up came off. I can't find one to replace it. Do I need to replace all of the hardware and yoke because of this? …
Mercury, twin 250 HP Optimax year 2018 Not rated yet
Had to replace 4 trim pumps on the starboard engine due to failure. The fourth time the dealer used a kit to fix the check valves.
Just the other day …
Verado, 350, 2016 Not rated yet
The engine started bogging down when throttle is pressed started at higher rpm and progressively got worse to where I could barely idle without killing …
Mercury Marine 25 hp Pro series 2stroke, 2001 Not rated yet
Cold start great, runs smooth. Warm engine hard starting. as if flooded, when it does start, have to run at idle or low rpm for a bit, then normal again. …
Mercury Marine 25 hp Pro series, 2001 Not rated yet
Cold start great, runs smooth. Warm engine hard starting. as if flooded, when it does start, have to run at idle or low rpm for a bit, then normal again. …
mercury 20 efi fourstroke 2019 Not rated yet
cant get engine in full up position. seems locked in down position. I moved the shifter to the forward gear and moved the tilt lever down but the engine …
mercury 150efi 2001 Not rated yet
I will be cruising along at about 20mph, then suddenly it feels like I drop a cylinder...the engine slows down to about 10mph, and I compensate by more …
2021 Mercury 9.9 20” Not rated yet
This isn’t so much of a problem but a curiosity. Is the Bigfoot lower units interchangeable with the standard lower units on the newer Mercury 9.9hps. …
150 hp VR6 Mercury 2002 Not rated yet
hard restart when engine is hot.Takes almost 20 tries and playing with throtlle
Mercury tower of power 90 horse around a 1987 I think. Not rated yet
When I go to start the motor the starter spins the fly wheel and kicks out before it starts. It only spins a couple of seconds at a time. I bought a new …
2005 25 hp Mercury Not rated yet
Have a boston whaler 110 2005 w/mercury 25 hp 4 stroke and has no power to go on plane i checked everything compression 185psi , new coil ,new stator,new …
MERCURY 60 HP BIGFOOT YEAR 2005 Not rated yet
Engine sat for over two years, I got it got it running but could not get all cylinders to fire. pulled it out of the water now it will turn over but will …
Mariner 60hp fourstroke EFI 2007 Not rated yet
Motor suddenly dropped down from 5800 rpm to 1200 rpm without a beep or other signal.
Mercury 115 2014 Not rated yet
It will drive 1/2 miles then dies and will start back up but won't go
mercury, 90 pro xs, 2017 Not rated yet
engine cuting out like there is water in the gas and cam the overev limiter make the engine run rough?
mercury blackmax 200 hp 1987 Not rated yet
Motor has had many issues, misses under small load but will almost run at wot. had bad plug wires and fuel lines, so those have been replaced , carbs gone …
Mercury 30 HP 1997 Not rated yet
Engine will start and run at idle, as soon as I throttle it up it stalls. Put in brand new carbrator, 2 brand new clean gas tanks, new hose, bulb and …
Mercury elpt 30 2001 Not rated yet
Clean gas (today.) Cleaned carbs (today, ultrasonic immersion.) New plugs (today.) Flushed fuel lines (today.) Replaced filters (today.)
Motor runs …
Mercury, 30hp, tiller, 2018 Not rated yet
Red light comes on at 5300 rpm. Consistanty. Will keep running fine. Doesn't enter limp mode
Mercury 30Hp 4stroke 2018 Not rated yet
Here is the problem I ran into after putting the boat in the water and started the engine using the pull start. Got to our fishing spot Put it in neutral …
Mercury, 8.0 hp 1996 Not rated yet
Motor runs flawlessly but for some reason it won’t engage into reverse. Forward no problem but when I try to go into reverse it just will not engage properly …
Mercury Verado 300 2007 Not rated yet
The center engine stopped shifting into forward. It stayed in neutral but I was able to shift into reverse. This happened about 3 shifts after the lower …
2006 60 ELPTEFI Not rated yet
Engine cranks but won't start. no fuel in line to injectors. replaced High pressure pump, pump does not run when key is turned on. no voltage to plug …
Mercury 115 Hp four stroke 2012, Model 1115F23ED Not rated yet
I accidentally shorted the two extra cables coming off the main battery when connecting batteries in relay and now trim doesn't work on my 2012 Mercury …
Mercury 90HP four stroke 2019 Not rated yet
Ran perfectly until last weekend. Would turn over but not fire up. Plenty of battery power and good non-ethanol fuel. Primer bulb is full. Checked all …
mercury, 225 pro xs, 2007 Not rated yet
engine bogs down back and fourth when running from 3500rpm to 5500rpm. like all of a sudden its not getting gas
Mercury Bigfoot 40 ultra-low emissions efi approx 2010 Not rated yet
Engine generally runs great but once in a while it will stumble and lose rpms while running at wot. Prob will sometimes persist for a few minutes but other …
Mercury 20HP EFI ELPT 2018 Not rated yet
My motor only has 48 hours on it. I use it o an 18 foot pontoon boat in a lake.
Yesterday after starting it the oli pressure light and buzzer stayed …
Mercury 90hp 4stroke 2017 Not rated yet
I had to replace my controls and it's idling at 1200rpm now what should the correct idle speed be. I'm using vessel view for the informatuon
Mercury 115 hp, 2016 Not rated yet
Consistently at 4300-4500 rpm even on flat water will rev higher but also looses power(like it spins out) and if you come back to neutral then can throttle …
Mercury 115 four stroke 2016 Not rated yet
Above 30 mph it sometimes hesitates. No loss of rpm. It doesn't do it all the time . Any ideas what my issue is ?
Mercury Optimax 150, 2 stroke, 2006 Not rated yet
220 hours. Fuel injectors and air injectors have been cleaned, tested and 3 of them replaced. New fuel filter. VST tank has been removed and thoroughly …
Mercury 200 EFI 0T272390 2001 Not rated yet
engine always starts and runs good at cold start up. Whenever I go to start it after those runs it always does the same thing. Engine starts missing and …
Mercury 90 hp ELPT 4S 2018 Not rated yet
Engine has a momentary hesitation about every 5 seconds, except at high rpm (5,000). Use only premium non-ethanol gas with Sea Foam stabilizer. Boat dealer …
2004 Mercury two stroke 50 horse Not rated yet
Misses at about 2000 rpm. Not sure if its just one cyl. or more. But I am inclined to think its just one. Plugs are new and look good (white/grey in …
2006 mercury efi 25 hp Not rated yet
Motor runs fine at higher rpms but sometimes has a rough idle and goes dead with put in gear especially reverse. at times it will run perfect at low idle …
2007 Mercury 60 hp 4 stroke efi Not rated yet
I have a Mercury 60 hp outboard that is blowing the 15 amp Smartcraft Data Bus fuse and stops charging the batteries. The fuse blows when the engine is …
2018 9.9 exlhpt ct pro kicker Not rated yet
when flushing motor some water is dishcarging mid bottom end as well as from p hole
Mercury 1980 two stroke 50hp Not rated yet
I haven't started my outboard for at least 6 to 8 months so decide to today, so while priming fuel notice fluid coming out of motor so took cover of and …
2020 mercury 9.9 pro kicker 4 stroke Not rated yet
hi I am looking for help to purchase and replace neutral starting mechanism on my mercury 9.9
Thanks to all. Cal
Mercury 115 EFI 4 stroke 2013 Not rated yet
Engine sometimes hunts 200-300 RPMs at slow speed below 2000 and sometimes stalls. At higher speed seems to run fine. I have changed the IAC idle air control …
mercury 75 Serial #OD252335 Not rated yet
I turn key on it beeps start it up continues to beep cant get it to shut off beep
60ELPT 4S Not rated yet
Motor set up for a year with fuel how to flush system? Wont crank!
Mercury 250 Pro XS 2020 Not rated yet
I changed out my 5 ea AGM 31Ps Batteries and Dual Pro Charger for Lithium Batteries and a Power Pole charger taking 250+ lbs out of the boat. I have a …
Mercury 75hp four stroke 2007 Not rated yet
Motor died in the middle of the lake. Wouldn't start back up. I found a 20 amp fuse blown. I replaced it and the motor started but then the same fuse …
Mercury 50HP 4 cycle EFI model 1A515452AD from 2003 Not rated yet
Voltage gauge and voktage detector at DC outlet show 18+ volts. Seems electrical a recurring problem on this model and similiar. Suggest new voltage …
2003 mercury 2 stroke Not rated yet
Took boat out for first time , just bought it. 2003 boston whaler sport with 40 hp mercury 2 stroke 2003. The steering is very hard . can someone with …
2021 Mercury 25hp Outboard Not rated yet
Hello, I been looking for days and cannot find anything to help. My uncle has a boat with a 25hp and it recently is unrepairable. He has the steering wheel, …
Late 1980sMercury 150 hp Blackman Not rated yet
Istarter will not turn fast enough to ingadge with flywheel.
1987 mercury black Mac 175 Not rated yet
1987 175hp black max on a bass boat.
it runs great most of the time
problem
at blast off it hesitates before it takes off. push throttle wide …
2020 merc 225 4 stroke Not rated yet
I recently purchased a new 2020 4 stroke 225. About 25 hours of operation I was cruising along and the motor started trimming up. I was able to trim back …
25HP Four Stroke Mercury Long Leg Approx year 2006 Not rated yet
My outboard quits running when put into forward gear. Starts good and idles good, can put in reverse and no problem but when I put in forward position …
2021 Mercury 200hp Pro Xs v-8 4-stroke Not rated yet
Brand new motor. According to dealer/service center, everything checks out as functioning correctly and lake test with Mercury's G3 computer diagnostic …
Mercury 9.9M 2 stroke 2005 model 1010201DD Not rated yet
Replaced water pump with complete pump kit
good water flow from pee hole the question is
should water be flowing out of the hole where the gear shaft …
1984 50 HP Mercury outboard control box Not rated yet
I am trying to find a replacement control box for my outboard noted above. I have tried two universal Seastar Solutions control box without any success. …
Mercury, 60hp efi, 2021 Not rated yet
Running at FOT, burn in, RPM went to 6200, puff of black smoke, then engine smoke for a little bit, shut down, started up about 5 mins later, no smoke …
Mercury 200hp EFI 2.5 outboard 1998 Not rated yet
S/N OG724176 Son took boat out fishing in the afternoon, air temp mid 80's. He made two runs then went to crank up to move and it wouldn't fire up just …
2006 200 optimax Not rated yet
Month ago or so occasionally when trying to jump on plane it would miss or more like a hard sudden cut out then just as fast regain power. Then it may …
2021 Mercury Pro Xs 200 HP Not rated yet
At Idle speeds when shifting from forward or reverse into neutral without squeezing the Neutral Lock Bar the motor quits. Of cpurse the bar must be squeezed …
2016 Mercury 115 hp 4 stroke Not rated yet
I was fishing lake George in Florida and noticed my speed had dropped.I got back to camp and motor was running kinda rough,shaking and sound like a misfire.I …
mercury 25 horse two stroke,2001 Not rated yet
I have dark black oily substance reminds me of exhaust in the lower part of my engine cover. It runs well yet this is wrong . Anyone know what is causing …
mercury verado 150 2009 Not rated yet
I have two challenges one is in regard to propping and the other is engine faltering.
I have a Harris 22 foot tritoon Sunliner. it came with a 17P …
Mercury 115 1997 Not rated yet
Engine normally runs at 4900rpms. Currently it will only run 4200rpms. After running for a few minutes the engine will start to miss and slow chug down …
2008 mercury 75 four stroke Not rated yet
Is high pressure fuel filter same filter as the low pressure ?
Mercury 115 hp Not rated yet
Engine runs fine up to about 2000 rpm’s then it sounds like it’s running off of 3 cylinders
1982 Mercury 80hp Thunderbolt Not rated yet
This outboard starts and runs well. Once hot, it runs rough at idle (in gear or out), and stalls. Thanks for any advice!
1985 mercury xr2blackmax 150 Not rated yet
Cant seem to get it to take gas. Boat cranks and idles ok for about 5 minutes and shuts off. If I try to give it full gas at take off it does. First issue …
Mercury 85 HP Thunderbolt about 1980 Not rated yet
Engine starts and runs smoothly around 800 rpm. After warm up, when dropped into gear and accelerated, it just chokes and dies.
The engine appears well …
2017 mercury command thrust 115 Not rated yet
This motor is on a 2017 Lowe Tritoon. Brand new would run 28-30 mph with our normal gear @6000rpm. motor has 451 hours. boat now will only run 18mph with …
Mercury classic 50 45hp tiller Not rated yet
Starts right up and goes good until I start to plane out. As soon as I the boat planes out the alarm goes off. If I back off the throttle the alarm shuts …
mercury 200HP Optimax, 2000 model Not rated yet
Engine will only crank when tilted up half way. It will stay running until it is trimmed all the way down and then it dies. It will not crank when trimmed …
90HP Four Stroke --2002 Not rated yet
ruff idle, Bottom 2 cylinders 3&4 are running excessively rich. Plugs black, 1 &2 nice burn, Good acceleration up tp 6000rpm. Idle is the problem, very …
1994 mercury EFI 225 Not rated yet
engine running fine but then son ran 2 stroke oil low and 4 beep alarm started. he added oil once back at dock and it appeared to be resolved (he did run …
2012 Mercury 150 Not rated yet
2012 Mercury 150 on a 2012 Harris Floteboat tritoon. Starts and runs fine up to about 3500 RPMs. Push it to over 4000 RPMs an audible alarm goes off, …
2021 mercury 20hp 4 stroke efi Not rated yet
I have a brand new mercury 20hp 4 stroke efi on a brand new grizzly tracker 1648 sc. Just got out of the break in period. So the problem I've been having …
2021 mercury 20hp 4 stroke efi Not rated yet
I have a brand new mercury 20hp 4 stroke efi on a brand new grizzly tracker 1648 sc. Just got out of the break in period. So the problem I've been having …
1997 Mercury 150 efi 2 stroke Not rated yet
how do you tell if your oil injector system is bad? I have a solid alarm and power is severely reduced. I took off the oil pump and the plastic bearing …
1996 Mercury 175XRI 2 stroke Not rated yet
When putting the gear drive into Forward it Grinds a little then goes in and starts forward momentum. When push forward a little more on the control it …
mercury 200 hp 2002 carb salt water series Not rated yet
pressure seems high to oil tank change check valve ran boat shut engine off wont start open oil cap engine start bog down a little runs for a while great …
2003 Mercury 15hp 4-stroke, #OT618616 Not rated yet
Unable to seat socket onto lower spark plug in order to replace it. I had been advised to get a ‘wobble head’ socket (similar to a universal socket but …
mercury, 4.5 hp 1980 Not rated yet
I put a new impeller unit in. Had taken off the head of the engine as well as the lower unit. The upper shift shaft became dislodged.
Now I can't …
Mercury 150HP Four Stroke 2013 Not rated yet
Motor starts and runs great up to 5000rpm. Above 5000rpm the motor intermittently coughs and sputters. Slowing down to say 4500rpm and it returns to …
Mercury 150 4 stroke 2013 model year Not rated yet
I purchased this motor used from a dealer in the Ottawa, Ontario area. It had about 275 hours on it. Ever since my ownership of this motor, I have …
Mercury, 1115F531D year 2018 Not rated yet
I have a 2018 Mercury 115hp 4 stroke outboard. I changed the water pump impeller about a month ago. Everything had been running fine with motor have a …
Mercury 115 Elpto 1995 Not rated yet
First start of the season and it will start but then dies in the first 5 seconds. Also it won't "pee" from the tell tale but not sure if it ran long enough …
60hp Mercury 1998 Not rated yet
Hi I’ve recently bought a second hand engine for my boat and fitting the throttle cables I found that there’s no way of locking them in position. You can …
1983 Mercury 80 hp 4cyl. model 6031534 Not rated yet
Bottom carb drips fuel a minute or so after shut down. Seems to pool up right at the opening. Carbs are rebuilt, reed valves are new. Float level is set …
1999 150 Merc Direct injection Not rated yet
Motor will start right up and idle all day. Will only Rev up a couple times at 1st, then it will not Rev up again. You will hear the air suck in, but …
1999 150 Merc Direct injection Not rated yet
Motor will start right up and idle all day. Will only Rev up a couple times at 1st, then it will not Rev up again. You will hear the air suck in, but …
1995 115hp Mercury Not rated yet
The power trim & tilt (PTT) on a 1995 Merc 4 cyl. 115hp. PTT is a single ram with memory piston, round motor, yellow fill plug. The piston rod wiper and …
94 mercury black max 225 Not rated yet
Motor went onto limp mode because of alow oil talk leak. Fixed oil issues but at full throttle engine wont rev out max speed 13 mph instead of 40 mph . …
94 mercury black max 225 Not rated yet
Motor went onto limp mode because of alow oil talk leak. Fixed oil issues but at full throttle engine wont rev out max speed 13 mph instead of 40 mph . …
Mercury Optimax 225 Pro XS 2018 Not rated yet
Has a slight miss around 4500 RPM. Runs perfect at any other RPM. Been this way since new. Coils, Plugs and wires OK. TPS OK. Any ideas welcome.
1994 40 hp, 4 cylinder 2 stroke mercury Not rated yet
engine will not start cold, have replaced the enriching valve, but still will not start. But when I push the button on the bottom of this solenoid it …
Mercury 150 black max 1978 Not rated yet
I am trying to find out what the little blue condenser looking part is above the rectafier the wires are bad coming out of it it has two wires one looks …
2013 Mercury 300XL Pro 4 Stroke Not rated yet
Hi all, I was cruising through some bigger water with only about 1/4 throttle when my alarm went off and my revs went down to an idle and I lost all propulsion... …
2005 Mercury 50hp ELPTO 3 cylinder Not rated yet
I just need to know what these 2 brown unused wires are for?
mercury 8.0 hp 2005 Not rated yet
The tillar arm is also the gear shifter and throttle. Something broke and the engine runs but I can't shift gear or change speed. I took off the cover …
mariner ogo51188 1994 Not rated yet
wire from fuel pump shorted out between fuel pump and ecu wire burned up replaces wire and pump now pump just clicks and motor wont fire
…
mariner ogo51188 1994 Not rated yet
wire from fuel pump shorted out between fuel pump and ecu wire burned up replaces wire and pump now pump just clicks and motor wont fire
…
Mercury 2001 200 hp xr6 Not rated yet
Was running fine at 4800 cruising then started clacking and shut down. Let it sit 5 minutes and idled for 20 minutes in gear. Then took off and ran 4500 …
Mercury 2012 4 stroke 90 hp Not rated yet
Engine runs great at idle and up to 2000 rpm. When you try to give it more throttle the alarm beeps 4 times and goes into Guardian mode, and will not run …
150 PRO XS 2019 Not rated yet
I've been told that you're not suppose to use a electric fuel pump with a four stroke motor. I have constantly ran off my console tank, because I've been …
Mercury 2000 135hp V6 2-stroke model 1135412WD serial# 0T154503 Not rated yet
Going from slow/trolling speed to high speed there is a zone on the throttle where the engine severely boggs down sometimes cutting out. Gotta push the …
2007 Mercury 150 EFi Not rated yet
One of the 20 amp fuses located in the motor keeps blowing. Engine will start and then immediately blows the fuse and motor dies. Trim functions normal, …
115 horse Mercury outboard Not rated yet
Can anyone tell me where I can locate this Mercury Map Sensor/Pressure Vacuum 880885T? Mercury is saying it is discontinued. Is there something else that …
Mercury Optimax 200HP 2001 Not rated yet
Boat ran fine then stalled cranked and started and stalls again when forward engaged. Did this a few times then would not start. Took it to Mercury dealer, …
Mercury 2012 90 4 stroke Not rated yet
When going full throttle it runs fine,, 5200 rpm, when I let go of the throttle it drops back to 4500 rpm and stays there. Is this normal? I just bought …
Mercury 2005 90ELPT Not rated yet
Dummy move. I'm old, don't see well, and connected the battery with reversed terminals. -12V, instead of +12V. Can't lower or start engine. Most gauges …
2001 optimax 200 Not rated yet
Motor runs and idles fine. Put it in gear, engine revs up then starts to cut out and stalls eventually dies. Starts back up and idles. This only happens …
Mercury 1043412AD 2003 40hp 2 Stroke Not rated yet
Wires melted and starter would not disengaged. I heard there was a problem/recall. Wondering if it's worth fixing.
2003 mercury 50 hp 2 stroke Not rated yet
went out on the boat yesterday and everything was running fine. about 30 minutes into cruising WOT it just shut off. turned key would not start. I put …
Mercury, 500, 1967 Not rated yet
Motor idles good. Can get high rpm with the choke leaver. But when putting into gear it goes but no speed or rpm. Thinking it’s a loose throttle cable …
mercury 1999 175 efi outboard Not rated yet
we replaced both voltage regulators ran good in tank a weak later i went to lake as soon as i started engine i hear a loud clacking noise checked lower …
2002 Mercury 225hp Optimax Not rated yet
Both motors have been running fine, yesterday went to the marina to get the boat ready to go fishing and both batteries were dead. I bought and installed …
Mercury, 150 four stroke, 2015 Not rated yet
I bought this boat with only 5 hrs on it and it has a Merc 150 4 stroke motor. The first few times I took it out, the boat ran great. Top speed of 36 …
2013 Mercury Verado 250 Not rated yet
Mercury 100hp 1990 Not rated yet
mercury 60 elp ct 2016 Not rated yet
Mercury 1988 135hp v6 Not rated yet
90 ELPTO 2001 Not rated yet
Mercury, 115 Optimax, 2007 Not rated yet
1996 75 hp mercury force engine, OF184137 Not rated yet
2007 Mercury 60EFI 4STR Not rated yet
Mercury 150 pro xs 2014 Not rated yet
90 hp 2003 outboard 2-stroke Not rated yet
2007 Mercury 60EFI 4STR Not rated yet
1973? Mercury 650 65hp Serial Number 3549069 Not rated yet
Mercury 2.5hp 2 stroke, possibly about 2011 Not rated yet
1982 40hp 2 stroke Not rated yet
Mercury CT outboard 90 HP Not rated yet
mercury, 225 offshore EFI, 1998 Not rated yet
mercury optimax 225 2003 Not rated yet
2013 mercury 40 hp Not rated yet
Mercury Black Max V6 135 - 1993 Not rated yet
1998 mercury 135 hp black Max 2 stroke Not rated yet
Mercury 125 2001 Not rated yet
Mercury 115 Efi 4 stroke 2012 Not rated yet
Mercury 115 Efi 4 stroke 2012 Not rated yet
Mercury 20hp 1988 Not rated yet
Mercury, V150 2 stroke, 1998, OG654774 Not rated yet
05 90 hp oil injection mercury outboard Not rated yet
Mercury, 75HP/3cyl/2st, 1995 Not rated yet
Mercury 0125 Tower of Power, 1968? (Red band) Not rated yet
1987 Mercury XR2 150 Not rated yet
Mercury 90hp [65 Jet] 2005 Not rated yet
1996 115 Mercury 2 stroke Not rated yet
Mercury 50Hp 4 Stroke 2007 Not rated yet
Mercury 1999 125 hp elpto Not rated yet
Mercury 60hp 2stroke 1996 Not rated yet
1992 mariner classic 40 hp 4 cylinder Not rated yet
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1996 Mariner, 75hp Not rated yet
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0T147549, Mercury 90 HP 4-stroke 2000 Not rated yet
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1995 115 2 stroke Not rated yet
2002 Mercury 9.9hp 4 stroke (323 cc) Not rated yet
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1995 mariner 150 Not rated yet
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1992 mercury 4 hp 2 stroke Not rated yet
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99 mercury 150efi Not rated yet
Mercury 200 efi 1999 Not rated yet
Mercury 90 hp 2 stroke 2001 Not rated yet
2001 Mercury 90hp 2stroke Not rated yet
2008 Optimax 90 Not rated yet
1999 Mercury 2 stroke 40 ELPTO Not rated yet
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Merc 2003 90ELPTO 2 STROKE Not rated yet
2013 optimax motor Not rated yet
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Mercury 2014 250 Pro XS 1251P73BD, SN 2B114383 Not rated yet
2005 mercury 90 elpto Not rated yet
mercury 25 hp efi 2009 Not rated yet
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2002 nitro 929 cdx 225 Mercury optimax Not rated yet
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2002 30 hp 3 cyl 4 stroke 0T538203 Not rated yet
1997 Mercury 175 EFI Not rated yet
2021 300 hp new 8 cy Not rated yet
1975 mercury outboard 650 Not rated yet
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Mercury 150 EFI 2006 #1B424789 Not rated yet
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2005 mercury 60elpt 4s efi Not rated yet
2018 mercury 150 4s Not rated yet
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1987 mercury 15 hp Not rated yet
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Mercury Optimax DFI 2003 Not rated yet
2009 Mercury 115 efi Not rated yet
mercury efi 1996 175 hp Not rated yet
Mercury 60hp 1988 Not rated yet
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1996 mariner 175 Not rated yet
15hp mercury 1997 Not rated yet
mercury 1A30411EK 2018 Not rated yet
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Mercury, 1075412jd, 1990 Not rated yet
pro xs 115 mercury,1115P73KY 2015 Not rated yet
1999 mercury 60hp ELPTO 2 stroke 0G919750 Not rated yet
2010 Mercury Optimax 225hp Not rated yet
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1998 200 EFI Mercury Engine Not rated yet
Mecury classic 50. 1987 Not rated yet
1999 Mercury 200 efi Not rated yet
Mariner, 225EFI, 1996 Not rated yet
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Mercury 125 . 2000 Not rated yet
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2007 Mercury 60hp EFI 4 stroke outboard Not rated yet
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40hp, 2-cycle Mercury 1998 Not rated yet
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2005 mercury 150xl 2 stroke no spark Not rated yet
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2001 Merc 225 two stroke Not rated yet
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2004 Mercury 60elpto Not rated yet
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2005 Mercury 115 2 stroke Not rated yet
99 mercury 150 Not rated yet
1998 Mercury 2 Stroke Fuel Injected Not rated yet
2016 mercury 115 Hp CT Not rated yet
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2003 merc. Optimax 150 Not rated yet
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1983 Mercury Black Max 150 Not rated yet
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Mercury 115, 1999 Not rated yet
1999 Mercury ELPTO with jet Not rated yet
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1984 Mercury 50hp manual start Not rated yet
Mercury 225 XL 1995 Not rated yet
Mercury 40 HP 1997 Not rated yet
2021 Mercury 75hp Not rated yet
2018 Mercury 40 hp Not rated yet
115 elpto 2002 Not rated yet
mercury outboards 90 hp 1997 ser# 6515897 Not rated yet
2017 Mercury 90hp 4 stroke Not rated yet
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2004 50 horse 4 stroke , Not rated yet
1996 Mercury 115 elpto Not rated yet
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2017 mercury optimax 150 2 stroke Not rated yet
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2017 Mercury 150 HP Power Trim Issue Not rated yet
2015 Mercury 115 EFI Not rated yet
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Mercury 175 HP 1994 Not rated yet
1976 Mercury 1150 outboard. Not rated yet
2012 mercury 20HP outboard Not rated yet
EFI Four stroke 90hp 2015 Not rated yet
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2002 Mercury 75 hp 2 stroke Not rated yet
Mercury 115 1988 Not rated yet
90hp 1979 merc 3 cyl 2 stroke with automatic oil mix Not rated yet
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2005 Mercury 90 up 4 stroke Not rated yet
Mercury 85 1973 Not rated yet
1986 Mercury 9.9 Not rated yet
9.9 pro kicker 2017 Not rated yet
1988 Mercury 70hp Not rated yet
1974 mercury 650 Not rated yet
Mariner 225 efi offshore 1997 Not rated yet
Mercury Pro XS XL 250 2013 Not rated yet
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1997 Mariner 225hp efi offshore Not rated yet
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1987 90hp mercury inline 6 cyl Not rated yet
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198915 hp mercury long shafts tiller electric start Not rated yet
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115 hp four stroke, 2015, Not rated yet
1999 mercury 125hp Not rated yet
1999 mercury outboard 200efi Not rated yet
2001 mercury efi 150 with throttle body Not rated yet
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2016 MERCURY 115 ELPT 4S 2.1L Not rated yet
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Mer 200hp efi 2004 Not rated yet
2005 Mercury 90 HP EXLPTO Not rated yet
2005 225 hp optimax saltwater Not rated yet
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mecury, 115 1994 Not rated yet
2015 Mercury 115hp 4-stroke Not rated yet
2009 Mercury Optimax Sportjet 250 DFI M2 Not rated yet
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mercury proxs 225 2006 Not rated yet
2007 Mercury 25 hp 4 strike Not rated yet
Merc 20 hp 1989. Not rated yet
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150 Mercury 4 Stroke 2012 Not rated yet
mercury 150 xr 2003 or 19 ft triton boat bud broglib@hpw.com Not rated yet
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1B387673 Not rated yet
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2005 115 4 stroke Saltwater Not rated yet
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2019 Mercury 150 four stroke outboard Not rated yet
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1991 Mercury XR6 150 HP Not rated yet
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1999 merc. 75 hp Not rated yet
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2007 Mercury 4 stroke EFI 90 HP Not rated yet
1988 Mercury 35HP B395053 Not rated yet
2007 15hp Mercury 4-stroke Not rated yet
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1992 Mercury 150 xr6 Not rated yet
115 merc outboard 2016 Not rated yet
Mercury 125 Hp , 2004 Not rated yet
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1998 Mercury 90 HP 2cycle. Not rated yet
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2006 90 hp 4 stroke EFI Not rated yet
2006 Mercury 90 hp efi 4 stroke Not rated yet
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1984 90hp mercury Not rated yet
2016 Mercury 4-stroke 90 HP Outboard Not rated yet
1990 Mercury 200hp xri efi Not rated yet
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2005 optimax 150hp 2 stroke Not rated yet
1991 mercury 2.5l 200 Not rated yet
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Mariner 125 hp 2 stroke 1999 Not rated yet
1982 Mercury 80hp ELPT Not rated yet
2017 60HP 4 Stroke CT Not rated yet
2002 mercury 50 hp 2 stroke ELPTO Not rated yet
mercury kf7, 389738 1949 Not rated yet
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2011 Mercury 60 Hp EFI Not rated yet
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1982 Mercury 115hp L6 tower of power Not rated yet
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2016 50 hp 4 stroke Mercury Not rated yet
2020 mercury four stroke 115 Not rated yet
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2007 mercury 25 hp 4 stoke ef1 Not rated yet
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1999 mercury 2.5 salt water series 150 hp Not rated yet
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1982 mercury 35 hp Not rated yet
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1995 Mariner 150 magnum Not rated yet
2015 25 hp Merc [4 stroke] Not rated yet
mariner 25hp efi four stroke 2008 Not rated yet
1994 Mercury 175 HP 2 cycle Not rated yet
1984 mercury 175 blackmax Not rated yet
1977 Mercury 4.5hp Single cylinder Not rated yet
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2002 Mercury 125 Elpto Not rated yet
74 or so mecury 850 thunder bolt Not rated yet
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2006 175 HP Verado, model 115V23FD Not rated yet
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Mercury 60HP EFI 4-Stroke 2003 Not rated yet
2006 mercury 60hp efi 4 stroke Not rated yet
50hp merc,3 cyl, 2010 Not rated yet
1973 Mercury 500 50hp Not rated yet
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mercury 250 pro xs 2004 Not rated yet
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1998 150 hp efi mercury outboard Not rated yet
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2016 merc 115 hp 4 stroke model 1115f131d Not rated yet
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2004 mercury 1115 mercury optimax Not rated yet
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mercury marine, 90 Elpo, 1999 serial# 0G812434 Not rated yet
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1955 Mercury Mark 5 s/n 764886 Not rated yet
Mariner 40hp two stroke Not rated yet
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1974 850 mercury thunderbolt blue band Not rated yet
2001 Mercury 115 HP 2 Stroke. Not rated yet
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2000 Mercury 15hp 2 stroke Not rated yet
1990 mercury 100 hp Not rated yet
mercury 85hp. 858f8a- 1862 Not rated yet
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90hrpower Mercury force 1992 Not rated yet
Mariner 1989 90hp outboard Not rated yet
2014 Mercury 40 hp CT Not rated yet
Mercury 115 EFI 2008 Not rated yet
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2015 75 HP Mercury Outboard 4 Stroke Motor Not rated yet
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2011 Mercury Optimax 150 Not rated yet
2006 Mercury 40hp efi. Starts and runs and dies. Not rated yet
75 hp mercury 4 stroke 2001 Not rated yet
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tracker by mercury marine 2stroke 60hp outboard 2006 Not rated yet
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2016 Mercury 25hp outboard Not rated yet
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Mercury Marine 60ELPTEFI 2005 Not rated yet
2017 Mercury Foursteoke 150 Not rated yet
2015 mercury 40 hp 4 stroke Not rated yet
2005 mercury 50 hp 4stroke Not rated yet
Mercury model#1043412wd 40 hp. 1999 Not rated yet
Mercury 150 xl pro xs Not rated yet
murcury 90 hp EFI 4 stroke, 2010 Not rated yet
Tracker by mercury 40 hp 1999 Not rated yet
mercury xr2 150 1984 Not rated yet
1989 Classic Fifty 45 hp Not rated yet
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225 Mercury offshore 1996 Not rated yet
1966 mercury 200 20 hp Not rated yet
Mercury,60 hp,2000 Not rated yet
mercury, 115, 1988 Not rated yet
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1987 Merc Outboard 6M Not rated yet
1987 Merc Outboard 6M Not rated yet
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Mercury 9.9 1995 2 stroke Not rated yet
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1979 mercury V-150 Not rated yet
Mercury , 115 , 1979 Not rated yet
Kiekhaefer Mercury, Merc 200, 1973 Not rated yet
2014 mercury verado 200hp Not rated yet
1991 mercury 200hp 2 stroke Not rated yet
Mariner 175 HP OB -1993 Not rated yet
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mercury 2 stroke 200HP EFi, 1997 Not rated yet
1989 Mercury, Black Max 150 2 stroke, oil injected Not rated yet
Mercury Optimax 135 2007 Not rated yet
mercury force 75 elpt 1996 serial oe169816 Not rated yet
2009 mercury 90 hp Not rated yet
1975 Mercury 110 (9.8 hp) Ser # 4248296 Not rated yet
40 hp mercury 2 stroke 2000 Not rated yet
Mercury 94 150HP XR6, Outboard, 2 stroke Not rated yet
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Mercury, 150 hp 4-stroke, 2013 Not rated yet
2003 225 Mercury Optimax Not rated yet
Mercury 50 hp 1986 Not rated yet
115 four stroke 2015 Not rated yet
Mercury 2001 30 ELH 4 ST Not rated yet
mercury 50 hp 2007 Not rated yet
Mercury, 60 EFI ELPT4, 2006 Not rated yet
Mercury, 4MH, 2019 Not rated yet
mercury 90 2 stroke 2000 Not rated yet
1989 Mercury Black Max 150 Not rated yet
mercury/ 2.5 200 efi/ 1998 Not rated yet
1993 mercury 200xri Not rated yet
merc 50hp two stroke, three cyl. 1996 Not rated yet
2010 Mercury Optimax 115 hp Not rated yet
Mercury '95 2-stroke 90hp, S/N 0D114247 Not rated yet
2002 90ELPTO Not rated yet
Mercury 60 2008 Not rated yet
mercury pro xs 2007 Not rated yet
2009 mercury outboard 90hp 4 stroke refi Not rated yet
1998 mercury 50hp 4-stroke/4cylinder Not rated yet
Mercury 115 4 stroke 2010 Not rated yet
mercury, F225 EFI4-Strke, 2004 Not rated yet
Mercury 100 EFI 4 Stroke 2012 Not rated yet
Mercury 40HP 4 cylinder 1995 Not rated yet
Mercury '94 90hp Not rated yet
Mercury 200 xri 1996 Not rated yet
Mercury 4 Stroke 150 hp 2017 Not rated yet
Mercury Optimax 250 Pro XS, 2008 Not rated yet
mercury 135 2005 Not rated yet
Mercury 30 hp EFI 2011 Not rated yet
Mercury 90hp Fourstroke 2014 Not rated yet
2006 mercury 15hp 4 stroke - Idles fine and stalls at accel Not rated yet
Mercury, 75Hp four Stroke/75ELPT4S, 2017 Not rated yet
2017 mercury verado Not rated yet
2016 Mercury 60 HP 1A60413BZ 4CY Not rated yet
2008 30HP OUTBOARD Not rated yet
mercury 225hp 2006 Sn 1B291136 Not rated yet
2015 Mercury 60hp four stroke. Not rated yet
2008 50hp mercury 2 stroke Not rated yet
Mercury F25ELPT 2007 serial# 0R181035 Not rated yet
1996 Mercury 200 EFI, Not rated yet
Mercury F25E sn # 0R-140066 YR 2006 Not rated yet
2003 Mercury 200 EFI Saltwater Motor Not rated yet
Mercury 60 hp efi 4 stroke 2013 Not rated yet
Mercury 2008 90 elpt efi 4 stroke Not rated yet
Mercury 40hp EFI 2013 Not rated yet
Mercury Classic Fifty (45hp) 1988 Not rated yet
Mercury Classic 50, 1986 Not rated yet
Mercury, Big Tiller 90, 2018 Not rated yet
2001 mercury 200 go xr6 carb Not rated yet
Mercury Optimax 90 hp 2005 Not rated yet
1984 50 hp mercury Not rated yet
Mercury 1974 85hp Serial #3868900 Not rated yet
2002 mercury/90ELPTO Not rated yet
1999 Mercury 115 saltwater series outboard Not rated yet
2003 60hp four stroke mercury Not rated yet
Mercury, 50HP 2 Stroke 2004 Not rated yet
Mercury 2004 60ELPTEFI 4 stroke serial # OT840910 Not rated yet
mercury 25hp outboard 2cycle 1983 Not rated yet
1978 Mariner 115 Not rated yet
Mercury classic 40hp 2 stroke c1989 Not rated yet
2004 Mercury optimax 225hp trim gauge Not rated yet
2016 75HP 4 stroke Mercury Not rated yet
2006 mercury 50 hp 2 cycle Not rated yet
Mercury 150 2015 Not rated yet
Mercury 60 4 stroke 2005 not big foot Not rated yet
2006 ,25 EFI ,4 Stroke Not rated yet
1999 mercury 9.9M two stroke Not rated yet
mark 25, year unknown Not rated yet
2001 Mercury 75hp elpt 4 stroke Not rated yet
Mercury 175 EFI 1989 Not rated yet
Mercury 50hp 2 stroke 1980 Not rated yet
Mercury Optimax 150hp 2007 Not rated yet
Mercury, 115 Pro XS 2019 Not rated yet
2005 60hp 2 stroke 3 cyl elpto Not rated yet
1993 Mercury 200hp 2.5 2 stroke Not rated yet
Mercury Optimax 250 xs 2007 Not rated yet
2015 90HP Mercury 4 Stroke Not rated yet
mercury 75 horsepower 4 stroke model number 1-f75412zd Not rated yet
2009 50HP 4 stroke Mercury Not rated yet
Mercury 135 v6 year 2000 Not rated yet
Mercury four stroke 150 EFI 2018 Not rated yet
Mercury 2 stroke 115 Not rated yet
Mercury 115 elpto 1998 Not rated yet
1983 mercury 200 2.4l Not rated yet
200hp optimax Not rated yet
Mercury 4 stroke 75 hp 2007 Not rated yet
2012 mercury pro Xs 115 Not rated yet
2007 50 horse mercury Not rated yet
Mercury 6230292 70 hp 3 cyl 2 strk Not rated yet
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OD032083 Not rated yet
Mercury 90 hp 2 stroke. 1998 Not rated yet
Mercury 150xl 2002 Not rated yet
murcury 4 stroke EFI 2005 Not rated yet
Mercury 115HP Four-Stroke Not rated yet
Mercury Verado 135 2008 Not rated yet
mercury 402 1977 Not rated yet
2005 Mercury Optimax 2 stroke 150HP fuel injected Not rated yet
Mercury 90hp EFI, 2012 Not rated yet
mercury 25 horse big foot 1999 Not rated yet
Mercury XR4 1990 model Not rated yet
Mercury, 115hp, 2004 Not rated yet
Mercury XR4 150 1988 Not rated yet
2006 Mercury 90 hp 4 Stroke Not rated yet
Mercury,25eh,efi , 2019 Not rated yet
1115D73HY 1B804092 115ELPTO Not rated yet
mercury 650 1965 Not rated yet
Mercruiser 350 inboard 1985 Not rated yet
Mercury, 2 stroke, V6 EFI, 240 HP, 2003 Not rated yet
Tracker(mercury) 115 2stroke 2005 Not rated yet
2003 Mercury 150 XR6 Not rated yet
Mercury 150 2016 Not rated yet
Mercury oil injected 60, 1987, #0B157444 Not rated yet
2008 Mercury 15hp outboard (F15M) Not rated yet
2005 Mercury 40hp ELTPO 2 stroke Not rated yet
1991 mercury 150xr4 Not rated yet
1991 Mercury 115 2 stroke Not rated yet
2005 four stroke 60 horse Bigfoot Not rated yet
Mercury 1998 90 hp 2 stroke Not rated yet
1998 Mercury 40/30 jet Not rated yet
Mercury, 60 ELPT BF 2010 Not rated yet
Mercury, 50hp, 2005 Not rated yet
88 70hp mercury Not rated yet
1998 Mercury 115 offshore Not rated yet
2001 Mercury 15 Hp 4 stroke outboard pull start Not rated yet
1986 35 hp mercury outboard Not rated yet
Mercury 115 1982 Not rated yet
1998 mercury 150 efi Not rated yet
Mercury 175xr2 1999 Not rated yet
1998 Mercury 215hp saltwater Not rated yet
2003 mercury 150 XL 2 stroke Not rated yet
2019 Mercury 60 ELPT EFI 4S Not rated yet
mercury 150 L DP 1999 Not rated yet
Twin Mercruiser 7.4 Engines engines will not start Not rated yet
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2012 Mercury 9.9 pro kicker Not rated yet
MERCURY ELPT 115 CT 4 S Outboard doesn’t even turn over Not rated yet
2008 mercury 200 optimax Not rated yet
1991 Mercury 150 xr4 Not rated yet
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2014 30hp Mercury 4 stroke Starting Problem Not rated yet
92 Mercury 2.5 efi,200 hp Cylinder filling with gas Not rated yet
1996 Mercury 25hp wont slow down Not rated yet
2018 mercury 115 four stroke Not rated yet
200hp Mercury electrical problem Not rated yet
Mercury 150 xr6 Not rated yet
50hp mercury 500 thunderbolt Prop requirement Not rated yet
1998 90hp Mercury Prop spins in neutral Not rated yet
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1977 1150 Mercury in line 6 Not rated yet
90 hp Mercury 4 stroke idle and stalls. Not rated yet
1998 mercury 200hp No gauges Engine in Limp Mode Not rated yet
1976 mercury 1150 Not rated yet
2013 2 stroke dfi 225hp Mercury Optimax died. Not rated yet
1990 135 hp Mercury black max. How to remove trim solenoids on Not rated yet
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7.4L Mercruiser 1991 Sea Ray 250 Not rated yet
2015 90hp Mercury throttle & shift cable replacement Not rated yet
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350 mercury crusader Carburettor not getting fuel in Not rated yet
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Mercury 25 hp1985 Not rated yet
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115 Mercury Verado on Pontoon Boat - Low Thrust Not rated yet
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2001 Mercury 60 hp 2 stroke jet Not rated yet
2003 Mercury 115 2 stroke Not rated yet
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2006 60 hp Mercury efi bigfoot 4 stroke Not rated yet
85 Mercury 35hp trim gauge install Not rated yet
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115 Mercury 4 stroke Not rated yet
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225hp 2002 Mercury Optimax circuit breaker location? Not rated yet
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2001 Merc 200 Optimax, 2001 Lund 1950 Tyee Not rated yet
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1993 Mercruiser 4.3L, hard start when warm Not rated yet
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Engine was running and starting fine. Suddenly while cruising I hear an audible alarm and see a warning: "Critical System Fault
Motor has good compression good spark is getting fuel to all carbs.back fires at idle. Runs but will not plane off
Purchased older boat with newer 4 stroke engine. Wanting to replace the fuel line as it is suspect. Wondering if a primer bulb is required on these EFI …
Oil injection delete by previous owner. When motor is running it leaks what looks like oil out from around the flanges of the oil shaft replacement part. …
I recently bought a 2001 BW Dauntless 16 with the Mercury 90 HP Saltwater as a running but project boat.
The engine starts and runs OK, however the …
Engine misses / sputters at high rpm. Recently changed plugs, coils, high pressure pump, low pressure pump, fuel lines, and bulb. Starts fine. Will run …
Put the pontoon in last weekend for the first time this season. It started right up and seemed to run fine in full, mid, and no wake throttle.
When …
2007 Mercury 60EFI ELPT 4STR
Motor was running fine , was low on gas , then died and would restart and then die repetitively even after adding 10 gallons …
Motor has 248 hours. Runs 113 degrees at 5000 rpm. Runs 158-165 degrees at idle. Sometimes when I decelerate the temp will run up to 190 degrees and sometimes …
replaced throttle control unit as the lift control was broken. put in brand new throttle control. after assembly, tested it. motor trim works fine. started …
Motor was running fine , was low on gas , then died and would restart and then die repetitively even after adding 10 gallons of gas.
Changed fuel filter …
I was having difficulty starting the motor so I changed out the starter solenoid. since doing so, when starting the motor the starter sometimes (not every …
Starts and runs fine but has a knocking noise. Noise will sometime go away, but seems present at all RPM's
I have:
Had the gear case off, changed …
Starts and idles for short time then increases rpm on its own. I have to shut down, prime bulb to start again. Replaced fuel filter
Had it out for the first this year and in runs rough at slow speeds. Had no problems last year and had it winterized before storage
tilt works intermittently. Wire hot to touch leading to motor. Note that the trim indicator - the other wire coming into that area appear to have broken …
stalls at slow trolling(1200rpm) as if I turn the key off but above 1200 rpm it runs fine
Turn key and does very little then turn key again and starts and runs perfect
Hello - my engine starts and runs fine, however, when turning the key at start, I do not get any warning beeps. I have checked the warning beep is working …
Was cruising at 40 mph when suddenly it started missing badly. No knocking or loud noises, just missing. Could only go about 15 mph after that.
Was idling fine, just past the no wake zone I gassed it ran for 50 yards shut down as if it ran out of gas. Would only crank at high throttle after that …
Changed water pump impeller…i now have oil leak/loss of oil. Could I have damaged crankshaft seal. How difficult to replace?
Changed water pump impeller…i now have oil leak/loss of oil. Could I have damaged crankshaft seal. How difficult to replace?
Top cylinder does not work at low rpm, seems to at wot.
While running a 14' deep-V aluminum with 1 other person it will get on plain at 20+ mph.
I have …
New power head, trigger, stator.
Hi folks,
I have been scratching my head on this one... a buddy brought me his blown up 1998 V150 2 stroke and a new …
Stuck in reverse. It was getting harder and harder to shift so I started to live the shift rod from up to lower unit and started to free up then boom …
Well maintained engine ran great at start of fishing trip. While at full throttle, noticed momentary (quarter second) drop in power. Power drop started …
Shifting into reverse issue. When I have the motor hooked up to muffs and running with water from hose for cooling, it shifts into reverse and forward …
When key is turned on I sometimes get a beep beep beep. Then start engine with water muff on lower unit. Then fire engine up and then a beep beep beep …
The tilt cylinder cracked. So I replaced that, replaced all of the o-rings, seals, and etc... in the system but the motor still won't raise up. The motor …
Hi, This engine has been stood for a while and when I went to start it the power trim motor works fine but the engine doesn't trim up or down, there or …
Will rev freely on high speed idle lever on hose But under load will only rev to 2500 Rpm
Took my boat out this morning, ran great. Ran the big motor 4 times to get to different areas on the lake to find crappie. When I fired it up to head …
Won't go over 2200 rpms on the water in forward. Revs out on muffs. And runs about 4500 rpms sounds great in reverse in the water. If you choke it while …
I am not getting the high rpm's out of the motor that I should.My old 2 cylinder single carb nissan would've outran this motor, i know somethings not right. …
I am re powering my 2006 lowes pontoon boat with a new 2021 Mercury 115 hp, Command Thrust. It has the original Mercury outboard mentioned above. The …
Idles rough but stays running with muffs on in the driveway. On the water idles rough when I give it throttle it starts to go then bogs out. Only way to …
Engine only starts if transmission disengaged, throttle pushed forward. Will run with throttle forward, stalls if pushed to neutral. If pushed past 2,500 …
runs very rough at idle, dies if you try to speed it up....put in new plugs w/correct gap, verified spark on all cylinders, new gas, check output side …
I am having problems starting and running at idle speeds. Sometimes all is well other times will just keep turning over without starting. Will start …
I just bought the boat with a broken bearing carrier. I can't seem to find the correct one. Where do I look to find one?
I have a 2002 mercury 9.9 hp 4 stroke (323 cc). Runs great but recently when I pull start, it's slipping. I think the plastic piece that isn't fully extending …
First off I don't know the year or kind of carb but The first time you try to start it for day it is very hard once you finally get it started it starts …
Intermediate hard start problem. Runs great once started no issues at all. Starts fine at times and other times starts hard. Mainly once you get out …
Engine crank but won’t start on idle. Requires to put the engine in gear for it to start. Sometimes will shutoff when in low gear (idle). Any thoughts …
Power Trim is malfunctioning - It does raise and lower the engine at rest, but will not hold a trim setting when underway. For example in a shallow water …
Engine starts fine, idles fine and accelerates fine. Problem is when decelerating it is very rough, and at times dies. Will start right back up immediately …
Hi, My 2006 50HP big foot Mercury will not idle down below 13 / 1400 rpm after short run. It makes it very difficult to dock since the approach is too …
I have a Mercury 40 hp Bigfoot 2003. This doesn’t happen all of the time, but occasionally. I can be just putting around the lake and then I hear 1 beep …
Dual engine 2001 Boston Whaler Outrage 26
After several minutes of running at above 3000 rpms, the motor will enter limp mode with no audible beeps. …
When i put the muffs on and run the motor water also comes out at lower case to upper case mounting area and the 2 small sqaure aluminum plates on the …
It starts no problem, it goes into forward and reverse with no problem and the prop turns on idle.
However the engine will not rev in forward or reverse …
my fuel pressure regulator is spueing gas, how do i remove it and put a new one on.i was told they are pressed on
Starts and runs fine until I try to Accelerate and it will not get up to RPMs but Sometimes it will and runs fine ???
It will stall when coming off high speed run now and again. When my son moves the throttle around it will restart by it self????
This motor was bought with an oil and water mix in the gear case. I did a pressure test and found air coming out from around the shift rod. None from the …
Stuck in reverse. When starts already in reverse. Also runs fine on plane (before reverse issue) but has trouble running at idle and cuts off.
I go about half mile in slow speed then engine dies. Will turn over but not fire so I go back and squeeze bulb to find nothing in line I pump it up then …
Bought a rebuilt motor. Have had it out 3 times. Same set up and prop. Barely comes out of the hole and Max's out at 5000 rpms trimmed out. Old motor would …
When trying to start, the key just pulls down the voltage gauge. I removed the cowl and saw the starter spins but doesn’t pop up to engage the flywheel. …
Fully charged battery, and when you turn the key nothing. Pulled cowl off and saw that the starter spins but it doesn’t pop up to contact the flywheel. …
I think it is important to mention my motor only has around 100 hours on it. On one trip, I ran the motor at a higher RPM than usual. When I pulled the …
The motor starts fine when cold but after running the motor for awhile, it will not start back up. Planning to take it to the shop but would like to know …
This is manual start. I want to change to electric start. Are there any suggestions
cruising at 5800 rpm then out of nowhere it drops to 1500 rpm for maybe 10 miutes and then goes again
My engine runs nice and smooth in neutral and reverse.
when I put it in forward it runs rough. chugs and shakes.
does not start running good until about …
Really slow oil leak. Had lower unit seal kit installed last November and put in storage. A month ago went to check on it and same problem existed. That …
Motor will start when when launching, it will run good to my destination. I will shut it off fish for about an hour, try to start to go to another spot …
Will not start in neutral, have to push button on side and rave power to start. Once started when trying to put back to idle, motor will die. So it will …
Battery not charging when running,ie; 12.4 volt when motor off. 11.6 volt when running and longer you run , lower it goes. 5 min running battery drops …
Starts for a moment then stalls out. Constantly. Changed fuel lines, filter, primer bulb.
It blew the ignition coil circuit fuse while it was idling and won't start. I replace the fuse and it blew as soon as it fired. Could I have a bad coil? …
Flywheel had to be replaced, and changed the stator and trigger at the same time.
Now I only have sparks on cyl 1 and 2.
Changed over the white and green …
Mid section paint issue, chalky paint on rear mid to lower areas of the midsection. Not to bare metal but def worn. 2nd owner of the motor. Just don't …
Mid section paint issue, chalky paint on rear mid to lower areas of the midsection. Not to bare metal but def worn. 2nd owner of the motor. Just don't …
Gas line comes out of lower cowling. Is there suupose to be bracket or something there?
Serial # 1B022992 Thanks
while motoring yesterday engine starting making some really strange grinding noises then shut down as if locked up. Able to restart but when I increased …
Engine starts but won’t stay running, I have pumped out all old gas ( non ethanol) and replaced with fresh non ethanol gas, replaced fuel line from fixed …
Last year I bought a 2020 Tracker pro guide sc16 with the mercury 90efi. during break in i could never get the motor up to recommended top rpm it was always …
Bought the boat last year and had it out all summer. No problems, stored the boat for winter in a heated garage. I took it out last Saturday, and when …
Brand new 2021 initial break in ran good for a few hours then all of a sudden would not idle down idling at 2000 rpm and throttle rough
trim up not working,changed solenoid still no work.help in diagnosing required.
1987 xr4 Magnum ll. OB304074
Just had the entire trim assembly replaced with a newer style assembly.
It’s much faster than the old one and when I bump …
I was going around 40 across the lake and engine made a winding noise and lost propulsion and died. It would start back up but died when I put in forward. …
Boat will not get up on plane. Idles fine. Cranks fine. I primed gas bulb before i launched and it idles fine. No alarms of any kind.....Mercury 225 optimax …
Trim will trim up and down at under 10 nts and ticking over . But when under load will not trim up and engine sounds like it’s going to cut out but it …
Lost spark on last use ... tried to plug in tech mate but it won’t communicate with the Motorola ecm # 13391715
859613 15 , 30 EFI 3 cyl
Motorola # …
the motor Boggs down randomly some thing while on plane at a steady speed other times while trying to get on plane. Just put on a new fuel/water filter. …
new at 3000 rpm everytime you get a whistle noise like air soon as u pass 3000 or so its gone dealers said its normal i went on another boat same motor …
was backfiring. the flywheel has 4 dots no sticker. timing belt broke - old age. after setting #1 tdc to plastic pointer on flywheel. where does arrow …
I purchased a bass boat with this motor. The previous owner blew up the 260 that was originally on it ,He dropped on a 225 powerehead but left the cooling …
Took my boat in for annual engine maintenance (it was running great) and my mechanic changed the water pump impeller, fuel filter and serviced the lower …
Took my boat in for annual engine maintenance (it was running great) and my mechanic changed the water pump impeller, fuel filter and serviced the lower …
I have a 1986 Mercury 75hp and cannot get the lower unit off.....All of the bolts are removed, or loose, and I have used a deadblow hammer(not too aggressively) …
Both kill switches are broken. The one on the end of the tiller and the run/stop switch to the left of the base of the tiller. What are the part numbers …
I replaced the cranking battery and crosswired it. It blew a 25 amp and 15 amp fuse on the motor. Now when I hit the switch to engage the starter it blows …
I had 2005 mercury 60elpt 4s efi, lately giving me long beeping when I am in the water after a few minutes, I had technician to check up, it’s engine over …
have hard time getting dip stick out to check oil its so hard to get out that i think its going break off.
Runs ruff at times. Is hard to start when cold. It also some times runs good. when running slow it might be ok but when you accelerate it sputters and …
Hello, Christy, from ft myers, fl. Our 2019 Mercury 150 is cutting out, or sometimes just will not start. We have changed the key/choke. And do all recommended …
my boat had been sitting for a few years in my garage. i replaced the fuel pump, gas, and batteries and it runs great. when we took it out for the first …
Just purchased on 2075 Lund pro v with 377 hours. WOT only could reach 42 mph. 2 men onboard and full tank with some gear. Ran smooth and good acceleration, …
running down the river, my engine just shut off. now it will not spin or start
When I bought this motor the recoil spring was broken, I replaced it. Looking at the recoil starter assembly and the flywheel there are no parts to physically …
Motor will start run perfect but when I go to use boat the next morning,it won't start. Come back out after a while and it will start right up. The red …
I want to install a mechanical water pressure gauge (Sierra 0-40 PSI). Mercury just gives me lip service and tells me my engine does net provide a way …
engine was running 20000 rpm and just stopped , Smartcraft Tacho warning : Lost Engine.
After key ignition on no bip warnning after about 60 seconds …
Starts fine, idles fine, throttle over 2000 rpm and it bogs, shutters but returns back to normal at idle. Fuel pumps and filters are fine, new non-ethanol …
i can get on plane and running down the lake when motor just completely stops. it will crank right back up and run then it does it again.
Running for about five min. 3/4 to full throttle and it just dies. Cranks right back up runs another 3-5 min does same thing.
Sometimes the engine (Optimax 90hp, 2008) cuts off while cruising above 5000 rpms, but will start right back up with no problem. It did it today out on …
It will run like a champ sometimes and sometimes it want turn 2500 rpms. It has done it when running down river and has done it straight off trailer have …
the engine wont start and run .it try to run if you leave it sit for 4 hour and try to pull start about 4 time after that is no hick up or any sign is …
engine vibrates at lower RPM and will rev up on its own i will be out running at almost full throdel'slow down to a trolling speed and the motor will …
While making my final run back to the Ramp after fishing today, I was letting up on the accelerator to slow down while approaching the ramp and the motor …
Hi All, I have a mercury 75hp outboard, The problem i am having with it is its running fine until i try and go full throttle where it bogs down. It does …
The base of the starter is loose,,,,cant tighten any more...Altho the rubber seal is on the top there is not one for the bottom of the starter...I can …
Lower unit needed. I believe this model originally had the jet lower but was replaced with a geared outdrive. The housing number is 1971-9760-C3. My question …
I have 2011 Nitro 290 sport and Just recently lost top end speed. Use to get about 53 mph and now only get 40-42. Doesn’t get out of the whole as fast …
When I pulled the rope to start in the past a light would illuminate on the front of the engine to indicate that the capacitor was charged and would start …
My engine has been tested in the shop many times, plugs changed, and compression checked(115-130).
When I take it on the lake and place a load on the …
Does water come out under power head inside mid section around outside of exhaust tube or inside of exhust tube, I have lower unit off and supplied water …
Sparatically losing power to my high side fuel pump. Mechanic spread apart pins in wiring harness to ecu. It ran for half a day and shut back down. Was …
On cold start up you would think I was fogging for mosquitos! Excessive smoking from the idle exhaust next to the tell tale. This has been on going for …
I want to add an aftermarket tachometer to my boat. How do I connect it to my outboard?
Is there a connector on the outboard or throttle assembly that …
the flywheel separated. the bottom portion with teeth came apart from the rest of the flywheel?
I replaced the lower unit and now the boat jumps into gear at high idle when shifter is in neutral. Sometimes at low idle in neutral you can hear clicking …
What are max advance setting and trotttel primary pickup settings on this motor also could you explain timming marks on fly wheel not sure on 30 and …
Engine runs fine until I shut it off when it's warm it sometimes will not restart. I've been running my graphs (2) while fishing. I installed 2 new group …
Engine starts easily but does not run beyond 4000 revs. It should make 5500 to 6000 revs. No alarm sounds so guess the guardian system is not activated. …
motor runs but when I put in gear it goes about 50 to hundred ft than it stalls I can start it up again, put it in gear and the same thing happens
I was out last weekend and my motor just shut down, I was just puttering at 2000 rpms, I thought it might be the battery but charged it and when I tried …
I’m getting 4 beeps every 2 minutes. The charging system is charging 14.3. With no draw when engine is not running. I have found delaminated fuel lines …
My 18', 1998 Monark pontoon has the 40hp 2-cycle Mercury outboard. The boat is new to me and so are outboard motors.
When operating the boat at mid to …
Good Evening My 60 hp 2 stroke will not stay running. We have fresh gas and oil mixed. 3 new spark plugs. It will start and run 2 to 3 minuets and just …
was running along and all of a sudden the engine shut down as if I just shut the key off. since then will not start and when I checked compression it was …
The motor starts and runs, but does not show it's charging the battery. The crank battery was dead and I mistakenly crossed the poles when I connected …
Hello: The problem is simple. The motor does not start. The starter motor does not spin fast enough to engage the flywheel. Tested the starter motor in …
Two things that might be related
First, with fully charged batteries. Voltage slowly drops when running engine. Ran 2-1/2 hours non-stop and voltage …
Having to replace two FSMs on pair of 2005/06 Mercury 175hp verado outboards. Can someone help with priming the FSMs or have a service manual that can …
my engine runs very rough between 500-2000 rpm. It runs good at high speed now that a bent shift shaft was replaced. Last year the head gasket blew. Anyone …
on cold start it stars fine and runs good at idle. when throttle is advanced engine begins to shake and run erratically until top end and runs fine. After …
When idling at the dock, either before or after a trip, I get a steady alarm and light. It usually takes several minutes of idling before this happens. …
We experienced no water coming out of engine. Mech replaced water pump and wheel with blades bent. We were running at full speed and engine shut down. …
oil mixed at 50 to 1 ratio - carbonated - runs fine at wide open throttle but misses at mid to lower rpm's - rebuilt powerhead about 2 years ago - compression …
I am first time boat owner and have a 1998 Bayliner Trophy. I took the boat out a few weeks ago and everything seemed great no issues. The other day I …
We take the boat run around 4000 rpm about an hour then go for lunch then on the way home it seems to go into a limp mode nothing on Smartcraft gauge …
To drop the lower Unit and change the water pump kit. Is there a clip or anything under the cowling to disengage the shifter or do I just loosen the four …
Intermittant low oil alarm. Replaced tank and sensor on engine.
Usually going from prolonged idle to throttle up it will beep and restrict rpm. Have …
engine cranks and runs great up to about 42 mph then starts losing speed. let off gas to idle , mash gas goes again for a few miles then does it again. …
Took boat to lake today, idled fine and acted normal through no wake zone. When I tried to get it on plane at about 4K RPM, the motor made a loud whining …
I’m getting a clicking noise coming from a relay mounted on the side of the motor. If I take a screwdriver and touch the two leads it fires right up and …
Boats been running fine all summer , noticed that it feels like cavitation just prior to planing, then its fine. Now when I try to accelerate , the revs …
Engine idles very rough when cold since new. 190 hrs currently. Spark plugs changed, water separating fuel filter changed and low pressure fuel filter …
I’m getting a warning signal of 4 beeps every 2 minutes. The owners manual says its a charging problem. I did a voltage drop test on the battery, disconnected …
Burnt wire connections as per pic..I think it's the voltage regulator and rectifier..was wondering what the repair should be..just a wire connector replacment …
I call it flutter but any speed below 2000rpms it runs rough. Not always, not everytime that's been going on for two years. Mechanic at my marina doesn't …
Recently after coming up on plane the voltmeter suddenly jumps to full scale and pegs. Some of the instrumentation shuts down. I have measured with a …
I purchased a boat last summer that came with this motor. It runs very well and I love it. My issue has to do with the hydraulic system (steering and power …
Hello, I am unable to shift the hand tiller into F in order to tilt the engine. It will shift into reverse but there is a stop that prevents he gear shifter …
My Oildyne replacement trim pump did not come with a manual release screw on the front of the pump. The original pump I took off had one. I reused the …
Hi just bought a used boat with 2 Out board Engines. The boat had been down for a few years. When we started one engine it came on great after a few minutes …
I notice when winterizing I have some burning wires at a connection..was wondering what this is from, what the block is that the wires are coming from..what …
When the throttle is advanced and begins high RPM state, the throttle pushes back in your hand and retarrd the motor to 4000 rpm. This boat strapped to …
Hello. I would need to change the thermo start on my f 100 Yamaha AET carburetor engine in order to order the right parts I am looking for the measurements …
I am trying to get to the stator and trigger, however after removing the pull mechanism and looking at the top of the flywheel, I do not see a nut to take …
This outboard came on a 1979 Sea Safe 21 Cuddy Cabin. It ran great on the trial run on a lake, but when I got it home, about 75 miles from purchase site, …
Engine will start, but will shut down while idling.
I can get it to run for a few seconds if it is at mid to high idle, but it will instantly kill if …
We just bought a tracker boat with this motor. We have had it on the water twice to break in the motor with no issues. Today being the third time on the …
The prop on my 2018 Mercury 40 hp has 3/32" of back-and-forth movement on the shaft.
The thrust washer is in the correct orientation on the shaft the …
Engine starts for 3 seconds and then shuts down. No lights or buzzers. When I pump the fuel bulb, it runs for an extra second. New rebuilt fuel pump, fresh …
feel like I need to adjust the idle up. when in natural it's fine but when to go to put it in gear forward or reverse it wants to stall unless you throttle …
Went to take my boat out of the water after the season and had a very hard time getting it to go in to gear, reverse was fine but forward was an issue, …
Turn key, engine whistles, starts runs for 4 seconds and dies. Starts whistling again. Does this sometimes, and sometimes it doesn’t. Replaced fuel filter, …
Motor start n runs good but when I try to plane motor bogs a little and will not plane , fuel pump is new and filter , new gas,
Engine only runs when fuel line is disconnected. Does not start until fuel line is disconnected and then engine dies within about 5 seconds after reconnecting …
Was running nice always, suddenly it cannot go over 2500 rpms, it dies. Replaced all three plugs, stator, power pack, and trigger.
Also all three carburators …
I winterize the engine, lower unit wasn’t attached to the engine. The shifter was in forward gear, keys weren’t in the boat when this happen. I turned …
Hard to start than ran down lake and lost speed to 10 mph max at full throttle than at less than full throttle it would die out?
It has been having a problem running under power , 1/2 throttle or more it will run up fine than all of a sudden start missing and running rough ,pull …
Starts fine , idles, can rev motor all while in neutral. Put it in gear, accelerate and it spudders and dies shortly after. Using the built in fuel tank, …
occasional stalling issue going from fwd to reverse. overheat alarm at low speeds, solid alarm. after, difficult to restart with solid alarm the second …
Just bought this motor on a pontoon. Put the "ears" on the lower unit, started the motor, noticed immediately it was not "peeing" and shut it down. Need …
I was able to trim up the motor to put my transom saver on and trim down to hold it tight. When I got to the boat ramp, I trim up to remove my transom …
Engine starts runs perfectly up to 4000 RPMs, above that, the engine loses power and stumbles. If I throttle back to idle for a few seconds, I can run …
Idles rough and will not get on plane most of the time. When it does get on plane it will cut out, bog, then Rev up and take off only to fall off and …
Last weekend while I was fishing I started up the motor and after about 10 sec it stalled. I restarted the motor and then it stalled again four different …
Motor seams to be missing by on cylinders 2,4,6.
If you pull the spark plug wire on either of these three cylinders it doesn’t affect the running …
I have a 1994 Mercury 175 HP EFI outboard that has an intermittent problem where it seems to be dropping 3 cylinders. It is not reliably repeatable. I …
Hi John here. I am replacing the starter solenoid on my 115 hp outboard due to a crack on the case. The removed part has no identification on the terminals. …
Purchase this engine on 1 3' whaler two years ago. Runs fine but trim motor doesnt sound smooth. Question: THe trim up only works at low RPMs. Is that …
dual throttle remote control trim/tilt issues. Dual trim switch on throttle handle - trim up starboard engine but not port
- trim down port side but not …
The engine starts and appears to run fine until you try to plane out. Then it will not rev over 2500 rpms. The motor is mounted on an eighteen ft triton. …
I have my lower unit set up and replacing the water pump. The unit slipped and fell over and the tip of the drive shaft hit the leg of my work table. When …
My outboard is a 2000 Optimax 225 DFI. It has this weird issue of losing power then regaining itself. It runs well for awhile, then it drops power. After …
I was at full throttle (5000-5100 rpm) shortly after leaving the no wake zone and the engine just completely shut down. It would not start for a little …
Extreme loss of power when I initially start. Sometimes it will not even get my boat on plane. After engine has been running for approximately 5 minutes …
at first forward and reverse would grind and never quite seat with the dog clutch and sluggish when going in gear. Now doesnt actually go into forward …
I only get about half power out of my motor. Lost top in power. I checked the high pressure pump on a battery and it is turning, I also checked each injector …
Usually after planning off and getting to max speed the motor will bog down for a few seconds then take off again to max speed it will keep doing this …
I can’t get the shift rod disconnected to get the lower unit off. Has a little hole in the side for maybe an Allen but only a star shaped hole in the top …
Hi this is Les from Cape Coral,FL. After replacing the Primer/Injector kit gas now pours out of the top and the front of the carberator. It had only …
Ran excellent today...shut it off because a line nearly was pulled into prop. Started it to start trolling again and I'm getting a steady beep.
It starts …
Hit a submerged stup. Broke off 1 1/2 blades on my prop.since the impact motor has run 3000 rpm. Will not increase or decrease. Even at start up it revs …
I got this engine tore down. Got it back together with new parts . While installing new timing belt. I ran in to trouble. I’m thing first I need to get …
Some times it will run great at wot and others it will only run around 4300 rpm but when it don’t do that I get 5300 rpm out of it and the book said I …
Launch the boat it starts and runs fine I run out to my fishing spot fish for a while and the engine just turns over but won't start.
I've had this problem …
Boat has been sitting for 5 years. Compression at 85-90 on all cylinders. Changed fule lines, rebuilt filter, new plugs, plug wires, and new lower unit. …
Just picked up and put it on my 91 barefoot Sanger. Looks to have low hrs on it and compression is 110psi across the board. Changed fuel/water separator …
Started engine with muffs. Ran for a few seconds, sprayed water, then suddenly died. Checked fused, battery is fully charged, shifter is in neutral, electric …
Cruising at full speed the other day the motor died like I had shut the key off (which I hadnt). The motor would not start again. After I got home I checked …
Whenever the weather starts getting cooler, I cant get the motor started. I try using just the choke, and also combination of choke and throttle and nothing. …
When running wide open engine bogs down to a limp mode and will not throttle up let it set or feather throttle it comes back aldosterone choke and speed …
Periodically the engine will just “click” when trying to start. Also it periodically just “clicks” when apply down trim and the engine is not running. …
My pontoon boat dies after about 30 seconds at full speed. I changed the fuel filter thinking problem solved but still dies after a little longer at full …
When I start engine in neutral and idle for a few minutes to warm it up then advance the throttle above 2000 to 2500 rpm (still in neutral) it surges until …
Idles rough, but runs fine up to 2200rpm, then jumps to 3200rpm,
when you back off throttle it then drops from 3200 down to 2200rpm.
Engine will not …
had an intermittent crank no start problem & confirmed i had no spark on cylinders 1,3,5 side of engine so it was recommended to me to replace both switch …
My boat starts engages in gear and when I throw the throttle forward to plane it bogs down instead of accelerating. I have changed the water separator …
After running across the lake to our fishing spot, I pulled back on the throttle, but engine did not slow. dropped it back to neutral, but engine revved …
Occasionally the motor starts to miss badly, but then will run fine.
You can run fine for long periods of time and then all of a sudden it starts to miss, …
The motor idles. It will come up to speed 30 mph. After 5 minutes to an hour of driving, the power goes right down. Max speed is 8 miles an hour at full …
Considering purchase of a mercury2012 115 exLpt 140 hrs. The motor has been idle for one year. Had it checked out and it starts and runs fine but compression …
Not getting fuel. Will start up good and ldel. Will not get up to plain off. My first though is replace spark plugs worked good for about 1/4 mile. Next …
The gear shift/throttle leaver is extremely stiff when shifting from forward to neutral, N to R, R to N and N to F. This makes manuevering in tight …
I have a 2005 225 hp Optimax. It ran perfectly until the other day. Suddenly when I went to go start it and turned the key the idle was at 1500 to 2000 …
Once I get trimmed out only getting 5500-5600 rpm with 24 pitched prop on a 200 hp 2020 mercury. Checked the throttle response and I am getting 100%. …
been setting 5 years, only runs on primer, either at carb. when i squeeze the ball fuel comes out of some type of switch with hoses hooked up to it, i …
Starts great. Can run for 5 minutes or an hour then it will start sputtering. The steering wheel snatched and the motor jumps when this happened. No …
Engine bogs (as if starved for fuel or air) at higher RPM (>4250).
All 3 fuel pumps and all fuel filters have been replaced and the VST has been cleaned. …
I have constant power to the high pressure fuel pump. If I leave the two red wires (red, red/blue) connected it continues to run with the key on or off. …
engine will start and run for 15-20 seconds and shuts off. engine will only crank over and not start if you attempt to restart it right away. if you let …
I tilted the motor down into water to start. Ran it for about five minutes then turned off and trimmed up. A few hours later my wife trims it down and …
Twice, when travelling with the engine in the back of my truck, the engine wont start when on the boat. Is there something about having the engine on …
I have changed oil pump, rebuilt carburetor, put new water pump in, new solenoid, new prop, new plugs on 2003 Mercury 40 hp 2 stroke 2 cylinder but still …
Engine starts good,idles good but won't accelerate or go faster than idle speed.I was told it may be the high speed stator and this motor is notorious …
Engine has not been run in two years. Drained all old gas. No visible inline water separator filter found. I Plan on doing the 300 hr service. My concern …
i have a 150 hp mercury xr outboard on a triton boat, batteries are fully charged, when i turn the key on then starter want work, trim want work, gauges …
The engine first time it goes on the water its only running on half power after you fisk for awile you start it and it runs fine. I replace the ignition …
The motor starts runs just fine and smooth in idle and when you push the throttle forward it runs at half or less speed like it has lost top end speed. …
Engine sat for two plus years without being started. Have completed the following.
-Replaced fuel filters.
-Replaced high pressure fuel pump & sleeve. …
Battery was dead. Battery cables were damaged. shield was scraped off (long story). When replacing battery and cables polarity was reversed! after proper …
Upon reaching planning speed the tach reached 6k and the engine shut down to idle. The sound from the engine was no where close to high rpm. After stopping …
Idles great, 1/3 throttle takeoff is good up to about 20 mph (gps) then runs on 2 cylinders.acts like starving for fuel. More throttle makes this worse. …
Replacing my lower unit first timer and I can't get unit to go all the way up. I'm sure shaft is not lining up right but wanted to get tips on how …
Hello all . I have a 01 mercury 25hp carbbed 4 stroke.this has always had a slight hestation at about 1/8 throttle to 1/4 throttle.if yiu go slowly through …
Needs to be choked excessively to get motor running, then onward throughout the day. The gas ball is often not full and needs to be pumped.
Once running …
I have 2004 twin 225 EFI with 740 hours on 94 Intrepid 268 with old controls and gauges not sure if 94 or 2004 plus wiring behind dash is very sloppy …
Having trouble with our motor. It has been stalling and not starting after. We have been having trouble most of the summer. It would run a few times …
Motor cranks every time and idles great but it takes forever to plane out. Changed fuel and filters and all spark plugs. Seemed to do better when first …
I have a 1977 70 Merc, that I have on a 14 ft McKee craft I've been redoing which was for my father n law that passed away 5 years ago, when I first started …
Bought a new tritoon, ran it through the 10 hour break in and then started having issues with the motor losing power and shaking, I get a constant alarm …
Motor would not start , checked battery it is at full charge . It would act like a low battery ,just give a short click noise to start engaging starter. …
Motor was running fine. Cranked first time every time. After a couple of days tried to start and no fire at all. Installed 2 new spark plugs, 2 new ignition …
I replaced everything in the fuel supply module due to the motor not starting. When I dump all the gas out of the FSM then turn the key on I can hear the …
My name IS Josh and I was out on the lake with my father in-law fishing its his Boat. We were cruising at top speed on calm smooth water and the boat died. …
Starts right run for a few minutes then dies may start back up and dies. As if it isn’t getting any gas. Dealer said bad gas, dumped gas put in new emptyed …
The motor runs great and no performance problems.
I has 3 battery's (2) trolling and (1 Start. It has a Marine Industry 3 bank charger and all ports …
Motor seems to have lost power and top speed. Came with a 2018 bass tracker heritage edition bass boat. I was able to get 33mph single passenger and now …
Idles fine. Gets on plane then the RPMs start fluctuating down and the RPMs drop as the engine starts to shake. Pull back tonidle and try again. It does …
Hello, I own a 2013 Mercury 40Hp 4 stroke 3 cylinders, for several reasons I left my boat sitting for over a year, I put fuel stabilizer but I didn’t drained …
Outboard tilt/trims on its own.Helm Switch and helm connections all good.Outboard switch and connections appear good and sealed.Can bad relay or relay …
Cranked this morning and ran fine for a couple of miles. Slowed down and motor died. Would not restart. Sometimes it would crank and run very rough …
I have about 170 hours on a 2018 Mercury 90CT Four Stroke attached to a SunTracker 20' Party Barge. Recently, after running it at approximately 4,000 …
Motor was running fine was at speed. Then died like out of fuel. Would only start up if u had it n neutral and throttle way up. But dies when u try to …
Just looking to purchase a fresh rebuild 1996 25hp Mercury tiller handle, short shaft, electric/pull start, manual tilt and wanted to see what type problems …
Hi, I have dual 150hp Mercury 4 strokes 3.oL setup on a plate aluminium 27ft boat.
Port engine will not start as I have no spark. I turn ignition on …
I am getting four or five beep tones that reoccur every 3-4 minutes while underway. Idles without beep tones.
I drained the fuel thinking it was a water …
My motor will only start when trimmed up partially, it in the water deep enough to still suck up water and pee, but on initial start up it will only start …
When I go to cruise at max RPM/Full throttle it sounds like the motor is making a subtle "backfiring noise." If I wanted to stay at full RPMs I could, …
The engine has just over a thousand hours of operation. It ran very well until the end. After turning it off in the harbor it started only with hand throttle. …
Boat has ran great since the day I bought it took it out last Sunday and it ran fine all morning while fishing started right up and came up to plane as …
First off, I'm new to boating. So go easy on me. Its on a hurricane 187. At full throttle I can only get the rpm up to 4500. I bought it gently used …
My engine runs very good 3 months ago , then it start with problems. I got to a Mercury service and they told me I have water in my tank. They clean it, …
Misfire At idle and stalls occasionally but runs fine otherwise. This started two years ago with just a slight misfire at idle but always started fine …
Throttle up to 5000 rpms - runs for 5 to 10 seconds and seems like it shifts into a higher gear. Rpms drop 400 but speed is consistent. Can apply more …
The motor is operating at high altitude 6000ft and I retarded the timing and put on a smaller prop. When the motor is WOT (actually backed off a bit due …
I have cooling problems, replaced impeller and have a good flow of water from tell tale, but the flow stops intermittently and restarts after about 20 …
I’m the original owner of this motor which sits on a 20’ Bennington, since day one this engine has always struggled to run smooth at 2000 RPM. At 3000 …
The motor statrs and idles great, but when I try to go above 3000 rpm a steady alarm goes off and the motor shudders. I've replaced plugs, fuel line …
Starts and idles great, but if I try to go above 3000 rpm a steady alarm goes off and the motor starts shuddering. I've changed plugs, hoses, filters, …
Let me start by saying this boat sat for 3 years (2010-2013) and we had major varnish build up despite having Stabil in the tank. Before we ran it, we …
Intermittent problem: On startup, the tack will read 1500 rpm, even though I can hear that it is running at the normal 700. Upon acceleration, the tach …
I have a 1984 90hp Mercury...The motor started running for short time then died just like shutting the key off.. When I turned the key to restart it, it …
We bought the boat in 2017 with the 2016 engine already mounted. Recently we start the engine at the marina, take it slow out of No Wake zone and keep …
Engine starts and runs great out of gear. Put in gear and it bogs, only getting maybe 1800 rpm. Back in neutral, 6000 R's possible. Have replaced entire …
Fished all day yesterday no problems, came to ramp towed a boat in for half mile , sitting at ramp waiting to load boat, it beeps one time and cuts off, …
I have power to the dash and to the engine positive and negative posts with my a brand new battery.
The engine trim relays click when button is pushed, …
Hello, Thanks for any help you can offer.
My motor starts in 1 or 2 pulls no problem.
Runs perfect for over an hour at all speeds and rpm.
After …
It runs fine for a couple minutes at wot then dies , It will stay running at wot as long as I keep filling the fuel bulb. Just got this from a dealer that …
Just bought a used boat with a 90HP EFI 4 stroke motor. I started familiarizing myself with the motor and have identified I need to replace the air filter. …
The tiller support has broken and needs to be replaced. I think the break could be welded successfully. I need to know what to disassemble to do this repair …
I am experiencing a problem as of lately. I’m experiencing a surge or sometimes a rough idle at times.
I have also been trying to push in the lower …
I had my water pump replaced last year along with new thermostats also and now after sitting for a couple of months the starting it every other week I …
Motor starts and idles fine when you put it in gear it will not get on plane now. Before it would seem like it was bogging down then it would take off …
water exhaust stream extremely hot - can't hold your hand under it. Have replaced the impeller on the water pump. Stream is intermittent -- takes a bit …
I am trying to access the 4 carburetors. There is a black plastic cover over the front and I removed the 5 nuts and 2 bolts that hold the carburetor in …
it's a two stroke that starts up fine, idles properly, but when I advance the throttle ,...unless I throw the lever all the way forward, it sputters and …
I started the engine last week and it made a sort of backfire sound and stopped. Could also have been the sound of sudden hissing air during starting. …
warning buzzer stays on as soon as key is turned on.hard starts would rev up ok and die when put in gear.will only run at about 1500 rpm at full throttle.reverse …
I have a 1949 model kf7 merc super 10 and I am in need of ignition parts. Coil, condensers, and points, can you point me in the right direction to get …
Engine oil leak with no visible source. Pulled cowling and side panels. Oil appears to come out dip stick. Replaced dip stick. Still the same. Oil slick …
Motor cavitates at about 3600 RPM or above on 20 ft Harris pontoon Runs better with full tank of gas & passengers in back. Has 20 inch shaft. 4 blade …
My boat won't start. It has spark to all 4 plugs and has 43 PSI at the VST. It's getting fuel all the way to the injectors but it will not spray fuel when …
When running my 35hp mercury electric start power tilt outboard motor I hear a beeping sound coming from the quicksilver gear shifter what causes that …
I took the boat out yesterday and it went to full throttle and after about 5 minutes it bogged down and wouldn't go to full throttle again as if was bogging. …
Problem: RPM higher than 2500 than engine stutters.
Max.RPM: 3000
Problem suddenly occured.
Caburetors are cleaned.
Diagnosis
Stoboscope light for …
Engine starts with no problem. In neutral I can rev the engine wide open. Only did it to make sure it would. I put it in gear and the engine runs smooth. …
My issues has only happened a few times out on the water. The motor seems to surge/bog when throttling up. I only run non ethanol rec fuel. I bought the …
power trim problem trims up a bit then stops before
motor gets peak rpm i get 4800 to 5000 got 6000 rpm when it was new also trims down when you try to …
My engine is running good and in the test tank it runs great at 3000+ RPM. When on the water at full throttle it take several different maneuvers to eventually …
Have good equal compression in all cylinders, and runs great in forward motion as long as you start out fully trimmed under. But if not fully trimmed …
Starts very good and idols fine and accelerates good but when I decelerate it wants to quit. It will start right back up and run fine until I back off …
new to boats.. old guy but bought small boat with merc 25hp efi. ran good 2 trips then died .
NO fuel pressure on fuel rail
Checked low press pump and …
Hello, I am having problems with my motor stalling out once I start to throttle up a little, and then it won't start up again. This has happened twice …
Pull chock out two clicks and motor starts. After warming up, I push the chock in one click and the motor dies immediately.
The boat was running fine two weeks ago and shifting properly. But after taking it out tonight for a slow cruise with the wife noticed at very low speed …
Engine will run perfect for around 15 minutes at 4800 and their very intermittently start missing or stuttering. As time progresses it gets more frequent …
New to me outboard that was reported as a good runner when started a long time ago. I replaced the water pump impeller and had a little difficulty getting …
It is a 1988 Searay Seville, 16.5 feet, with a 100hp mercury outboard in Searay colors.
There is a loose ground wire in back, near the fuel tank and …
Primer bulb never gets hard wont stay running all the time but ran at wide open throttle. I cleaned carb and noticed the float was full of fuel. So I replaced …
Starboard side engine idles rougher than the port side motor, and when I've run it for an hour it will die at idle. Starts right up and will run as long …
Engine stalls after running for a few hours. Replaced the kill switch. Tried to start it, wouldn’t start. Unhooked the kill switch. Engine starts but gas …
Just installed a new control box(before this engine ran fine. After getting new box and cables installed I took it to the water. Engine fired right u,checked …
submerged , at landing due to rain in boat and plug still in . Was only for a couple days and drained out,, oil changed .Engine did start after changing …
please can someone help me out, my mariner 25hp efi engine keeps going into idle mode after about 5 mins of running ,
also the red LED light comes on …
My grandson just purchased a Angler 22 ft with this 175 HP Mercury outboard. Seller hooked up a garden hose under the top cover and started engine right …
last time i took the boat out it ran fine on the way out then my brother wanted to troll and we were using the main motor barley running to troll for a …
Hi guys. I have a Merc 4.5 that I can’t get running. I have replaced all the wiring, coil, carb kit, and impeller. I have spark, and have set the idles …
The main power relay continues to click with the key in the off position, have to disconnect the battery to get it to stop. When the battery is connected …
When is cold it runs really well. Approximately 31 at WOT. After I stop and sit for a while and then take off again I can only get to around 25 or 26 WOT. …
Motor was running fine out on the lake and suddenly shut down , thought I was out of gas so switched to other tank and it started up and quit , started …
It quits running like its running out of gas. it fires right up and runs for a short time then stalls again. There is fuel in the filter right before the …
My 2006 Verado runs fine until I go to a beach where I have had the motor tilted up.
If it is a hot day and we at a beach for 1-2 hours, when I go to …
I took the boat for a 1 hour drive yesterday and ran it at several different RPM's. On my why back home I'm going thru some canals so I'm running about …
Recently did an oil change 4-weeks ago on a Saturday morning and took it out Saturday afternoon boat ran like a champ no problems. Took the boat out 2-weeks …
While boat (2006 bass tracker) is on trailer with earmuffs on, motor has high rpms when I put it in gear (forward), but once it's in water it only gets …
just bought this 2010, merc 50, was running great on plane, then it started making a fast "whooping, knocking " kinda noise...thought I caught a root. …
First time boat owner. bought a used 1999 Landau DX18 pontoon for me and my son to rebuild from the ground up (both boat and motor).
It came with a …
I have had 2 driveshafts break since I bought the boat 2 years ago, brand new thru a dealer. Mercury has replaced both of them, but will not extend warranty …
something broke, probably a gear issue in my lower unit. i am a tournament angler and getting this fixed quick is impossible. mercury won't even ship …
The engine has a little over 1000 hours of operation. He went very well until the end. After switching off in port, the engine only started with hand throttle. …
I bought a used Tracker 2017 Super Guide the engine only had 7.5 hours From Cabela’s . I took it out and and ran it, after awhile the engine seemed to …
5 years, 190 hours, cocktail cruiser pontoon in Indiana. Prop contacted lower unit housing and machined it out by a good 1/8 inch or more. Machined internal …
i have purchased a boat that has set for 7 years. we cleaned the fuel system out and it fires when we force feed mixture to the block. i have replaced …
This 2015 Mercury 115HP is a Command Thrust. It is on a pontoon boat. For 5 years during the summer months we always kept the motor down in the water. …
No problem but could be my question is on my new no poo at and engine there is no water separator type filter on the pre engine fuel line supply..i noticed …
Had for 3 years just started having , problem I can take off from dock go a few miles run about 5300 the guardian mode kicks in showing 170 degrees soon …
merc 9.9 2 stroke. I redid the lower unit and it is fine. when i went to attach the shift rod to the clip in the engine, the part that it clips to had …
I was out on the water today running the boat and everything worked great. I am ready to come in and take off full blast. the boat planes out and all of …
The 15amp fuse on the motor blows spontaneously: I finish fishing pull the boat in the yard. Wash the out side, tilt motor and try to start boat, fuse …
1999 nitro 700LX same Alarm that tells me when oil reservoir goes low goes on when engine is turned on and does not go away, pumps water very strong, oil …
So about a month ago I went fishing motor ran great got me out to where I wanted a fish. I went to crank it over to get home and it would just crank it …
I am trying to replace the water pump impeller on my Mark 5 and I do not have any maintenance manual information.
It appears that the neutral shift cable …
Hi There I have a Mariner 40hp outboard in pretty good condition, the engine is a 2004 model the problem I have is loss of power on full throttle, I had …
We were fishing at trolling speeds for a while, shut down and took a swim for about 30 minutes. Started up to run home on plane, about 4 miles. Boat …
Hi John, I’m an old time mechanic and new to marine engines. When I bought the boat and motor it ran perfectly but didn’t charge the battery. I changed …
I have to remove the lower unit. I see an arm that might have a screw in it or an allen. I saw a nutt on one video and the other just slipped out. Mine …
Motor was running fine (Sorta). First few times out seemed like the power was missing intermittently, but boat was powering up and planeing ok. Thought …
After about 1 hour of riding the engine starts sputtering. The RPMS drop and sometimes increasing the speed helps, and sometimes it causes it to get worse. …
I have a 2000. 15hp Mercury 2 stroke I have had it a few months. On the way out to the lake it started bogging down. I stop made sure the ball was hard …
About 2 weeks ago the boat alarm would go off and on, sometimes staying on for a few minutes then increasing to the entire time the boat was in the “on” …
would like to know timing angles-wont start and run with top cylinder plug wire on-it backfires and kicks itself -compression on all 3 cylinder is 90lb. …
I need to find the installation location for a CDI voltage rectifier/regulator. I know the correct wiring landing, but this used motor did not have a voltage …
Motor runs good out of the water, but as soon as I put it in the water there’s no power even at full throttle, I already rebuilt the 3 carburetors , I …
the motor will only start when battery is charged to max. I recently replaced impeller with an OEM impeller. Problem started with new impeller. The …
Hi there, I bought my engine last year with very low hours. Ran well and then this year it is running very rough, almost like coughing when first engaged …
Engine starts but sometimes slight shaking, starts fine, idles fine, takes throttle fine. When at WOT engine only gets to 3200 rpm. It used to run upwards …
Boat fires up and runs good out to where we hang out on river hang out all day and make it to the ramp it dies and will not start back get it loaded up …
The alarm goes off when you turn the key and never stops. It’s the continuous beep, which can be oil or heat related. It does this at cold start, so I …
The motor works well when picked up from boat storage. Then on one trip out on small lake, it starts to run rough, loses power and I drove back in. Added …
Found water in engine oil. Seemed like a teaspoon came out right away when draining oil. And after draining seemed like water dripping out.
when the motor is off, it raises and lowers normal. When motor is running it will only trim a little and then stops. If I need to raise it more, I have …
I recently purchased a boat with an 06 mercury 40hp efi motor on it. I put the key in the ignition and cranked it and it started right up. It will run …
Just had carbs cleaned, new fuel pumps and oil change. Made one lap around the lake and got it warmed up and then shut it down and checked oil. Oil look …
changed out the stator cause it went bad now the motor runs fine st idle when I go to take off at wot it gets up to 3000 rpms and holds there for about …
when I shift into forward position while in water I have no issues but when I try to throttle back a little bit it feels like im bout to pull the throttle …
idles fine revs up in neutral and in gear with muffs on, put in lake won't rev up. replaced plugs, fuel pump, fuel lines, primmer ball, rebuilt all three …
When cold, starts and runs fine. After puttering around the lake 2 -3 hours and shut off, then will not restart. Only until it gets cold will it restart. …
Starts fine idles a couple minutes starts bogging down kills, get a 6 beep, none critical, error code.
At start if I idle up no beep code runs fine, just …
Hello! So, the other day with only my wife and myself on our 22' Princecraft pontoon boat we found that we could only achieve 10mph and the motor would …
I have a 2017 Mercury Fourstroke 150 and have had a problem with the alternator charging. It would run the battery down and then wouldnt start. I was getting …
I recently changed the oil and filter and now theres a knock seams to be coming from the top of engine, I thought I had the wrong oil filter , Ive tried …
I made the mistake of crossing the battery cables thenraised the trim up when it stoped I turned over the key to here it turn over but it did nothing I …
It keeps fouling plugs. It started fouling set plugs every other trip 2 lake now will start n run long enuff 2 foul plugs i have bypassed oil mixer i mix …
2019 Tahoe 1950 boat was delivered on 5/1/20. Runs great and for a long time at low speed/rpm. Increasing throttle to 3,000, and after about 90 seconds …
oil warning signal started, and I could hear a spurting or sucking sound. Oil was leaking out very quickly.
This was the first ride of the year. It …
For a season and a half motor runs, idles, revs like it’s brand new. On a bass tracker 175 which will run 5200 rpms and 31 mph on a good day.
Recently …
We have been having trouble with this thing every since we have bought it. I have bought all new electronic parts, rebuilt the carburetors, and rebuilt …
Motor seems to run fine however does not have the power it should. Have had fuel problems but don't feel it is reaching proper RPM's. Have ordered a Tach …
This is not so much of a problem, but ive search all over internet and called Mercury dealers here in Norway with no luck to my question. I was just wondering …
Our 1996 Mercury 225 offshore outboard will run fine in the morning but after going 20 plus miles out and then stopping to fish it will start to run rough. …
I cannot get water to circulate through the motor. I’ve replaced the impeller and it pumps water when turned with a drill, but no water goes up the water …
I had to rebuild the tilt trim cylinder I reinstalled on boat it will trim down but not up it will work both directions if not attached to motor with motor …
While loosening a bolt on lower unit the lip or anti-ventilation ridge on the midsection (exhaust housing) busted. is it necessary to repair this?
When the boat is on the trailer in the garage and I turn on the ignition it beeps three times beep beep beep but as soon as I get to the water and turn …
I have what I believe is a 1987 Mercury Outboard 6M. It was in a basment the basement got flooded. I got it running with a carb clean, new spark plugs …
I have what I believe is a 1987 Mercury Outboard 6M. It was in a basment the basement got flooded. I got it running with a carb clean, new spark plugs …
The engine starts and when idling away from the dock, is reluctant to take the throttle. It hesitates, acts like it is running on one cylinder, and sometimes …
This 9.9 has very few hours, and hasn't been used for awhile before I bought it. I installed a new water pump as a precaution. I took it out and it started …
Will not run past 3200 revs. Under load. Sound to be starved of fuel and intermittently it will ‘clear’ and run up to 5,500 but it takes a wee while to …
I have replaced the stator, the trigger, rectifier, both power packs and all the coils and the plug wires. The motor will start up and rev all the way …
Good morning I have two separate problems that could be intertwined I suppose.
1. Bender gear on starter will not lift To engage the flywheel But does …
Hello: I need to replace a prop on this outboard. The existing propeller is a 3 blade. The diameter and pitch stamped on the prop are illegible. I …
The motor is going into guardian mode after running for awhile, my smart gauge is showing high temp oil problem. I did just change the oil and filter with …
The engine runs perfect on the mufflers but when I put it in the water it’s flat/dead. It will only Rev up to 1800rpm but will hold constant at 1800 and …
Having overheating problems. New impeller and new thermostats. I noticed that the thermal vacuum valve (Part #814612) is broken/ new one ordered. One …
Engine could be a 2016 or 2017, boat package was bought in OCT 2017.
Issue is, electric was working fine(tilt motor up down, did not attempt start before …
1997 2 Stroke EFI doesn't get on plane easily, and when it does can only hit a top speed of 42 mph, compared to 55 mph when running great. Changed the …
So, after already fixing the ignition control modules, and other things, like water in my tank due to a boat mechanics mistake, it sat all winter with …
The engine I am having problems with is a 2007 Merc. Optimax 135. Very low hour engine. Engine starts and runs great. Trim/tilt works fine but the trim/tilt …
no spark that i can see at the spark plug, i can feel a slight tingle at the plug with my hand. found two yellow wires that look like they go to a regulator …
I'm having trouble starting my motor. It cranks fine, but will not fire. Seems to not get fuel? When sprayed with starting fluid, it fires up and runs. …
Issue: Won't hold prime while running.
Quick history. Free motor but it hasn't run in 20 years. Checked and had good spark. Ran on non oxy fuel for …
After I connect fuel line and prime system, if I leave the fuel line connected, the motor will flood out. I have removed the carb and checked needle and …
Went to start it up after sitting idle during the winter, new plugs, a little lubricant in the cylinders, fresh charge on the battery and no start. I …
Stored boat outside winter of 2019 and in the spring noticed the lift cylinder had frozen and cracked. Had the lift cylinder repaired with a new cylinder …
Has anyone had an issue with the Mercury outboard momentarily losing power (mph/rpm drops) for no apparent reason at medium to maximum throttle settings. …
Well where do I begin, I’ve been trying to diagnose this problem and have been to two mechanics. My boat will start fine and take off plane great but after …
Motor has not run for 12 years. Two carbs. I have cleaned the fuel tank, I have fresh fuel and oil mix and added a can of sea foam, have changed the plugs, …
I have been having this problem for awhile. Everything was fine and then out of no where my engine begins to lose power. It will run fine and then its …
Motor was working fine did a little work on the control cables. Would not start after doing this work. Sprayed starting fluid into the cylinders motor …
when i crank it its sluggish coming out of the hole and when it finally plains out it will miss about twice and run but when i slow down to idel i half …
Starts perfectly, runs well for any distance (15-30 minutes at 20 mph), stop to fish. Restarts well, runs for a while, then falls on its face, backfiring …
Engine will start and idle okay and runs as as throttle is advanced but within a couple of minutes it sputters and shuts down. Had run this new motor …
I have a 2000 Mercury 90hp 2 stroke on a pontoon boat.
I takes a while to warm up, stalls out at idle in neutral. In gear it will not go past 2000 rpm …
This started last year. Engine starts fine and idles fine. Once I move the throttle, there is no engine response until I get about 2/3rds throttle, it …
motor is on a 1990 19' panteraII basscat. Just bought the rig. Fixed iat sensor, had injectors cleaned, deleted the 2 little bowes on port side. Forgot …
I have a mercury 200xri. I was going down the lake and all of a sudden the boat lost speed and sat down. Now the boat won’t go into gear. The throttle …
My 50hp two stroke surges at about half to two thirds throttle. But, will reach wide open throttle and run ok there. What causes this. It has fresh …
Just bought a used 2010 boat with a 2010 Merc Optimax 115 OB motor. First time on the water, I trimmed it up some and the motor shutoff. Is there an …
I bought a used '96 Nitro bass boat. The motor wouldn't even turn over. After finding that the solenoid was bad & replacing it, now it turns over nice. …
Whenever I push down throttle the Throttle Control Rod pops out of the bushing. I've replaced bushings and it is still popping out at higher rpm. I do …
Hi, Looking for advice. Noticed a hole in the top of the left bottom end cover of my outboard which hadn't been machined, looked more like a burn through. …
Replaced engine oil tank, primed system by turning key on and going from neutral to forward 3 times. It did its thing but now has a check engine on the …
the boat has been sitting for the past 4 years the motor only has 35 hours on it but has been service atleast twice a year I took it out for the first …
I need to change the water impeller,but I don't know how to disconnect the shift shaft. does anyone know of a video site that will show the proper procedure? …
I was in riding in my boat when the audible alarm did a continuous beep for about 5 seconds and then engine bogged down and stopped. I could restart engine …
Drained 5 year old gas from boat, replaced with 10 gallons non-ethanol gasoline and 1.5 cans of Seafoam motor treatment. Started engine at home ran rough …
Died today at 488.4 hours, had to be towed by police back to safety. Mercury Service Centre says its the Oil Drive and may as well replace the motor? He …
Same issues as others I have read. Engine idles fine, but when I go to 1/2 to full throttle engine goes well for 30 seconds and then bogs down and then …
I bought a used bass boat without first turning the steering wheel. The steering cable was frozen (corroded) in the tilt tube. I've gotten the cable out …
starts fine idles great 1st thing after you run down the lake and stop it will start again with in 5 minutes. If you fish for 1 to 2 hrs it will not start …
The engine won't turn on suddenly. The trim worked for a moment then also stopped functioning. No noises are coming from the engine and no leaks from the …
After being on the water and using the motor intermittently during the 5 hour session, I get the boat on the trailer and out of the water, attempt to tilt …
Starts right up runs great if you but it in revers its fine when you put it into forward it stalls but if I get it to go when you jump on it just before …
Not getting gas out from fuel pump inside SVT. I can run the motor straight off of battery, but it won’t run plugged in. It won’t prime when started, …
I cant seem to get the motor to trim/tilt up. I can only get it to go down. To get it to go up I can swap the wires at the relays and use the down button …
I am troubleshooting a new to me 2006 Merc 15hp:it had an accel pump housing leak and I fixed that and changed the diaphragm that was too stiff. Then motor …
Discolored Engine Oil. I bought the motor brand new in early 2017, live in Wisconsin. I used it every other weekend during the fishing season of 2017. …
Almost once or several times a day when I give power to get on a plane it will go to idle and a steady beep occurs. I then shut down and restart and it …
Motor has only been cranked 4 times the last time was in June 2016, It has fresh gas and I would like some expert input of what exactly I need to do before …
I am using this on a 1975 Boston Whaler sport.Do not have middle speed. Either fast or a crawl. I already disassembled the shift control box and cleaned …
Motor starts and runs at idle easily. It will run smooth until you start to accelerate and about 3000rpm it starts missing and will not go over 3000 …
My alarm goes off (3 beeps/repeatedly) after 5 minutes while at top speed. If I back off the throttle the alarm stops and I can spped back up for another …
Engine starts and idles fine, but when trying to accelerate engine just dies. I can tool around the lake at idle speed no problem. Can't get the rpm's …
When I am just reving the engine with just throttle (button pushed not in gear) it revs up nice and high and wants to scream at WOT (basically runs great) …
Became hard to start, ran it up the lake and when I poered down it started running rough. When I took the cover off I see Fuel dripping from the filter. …
I have 2 of these engines but I have a Yamaha 703 10 pin Remote control. I have the color code for the 703 connector but I need to know what is the color …
Start and idles great ! It will die running full speed or some time it die when exhilarating hard. But it always restart. We have check fuel pressure on …
Doing this in the yard with engine flusher on.
Engine cranks fine. Idles fine. Rev it up it sputters then clears up at 4000 rpm.
Bring it back to idle …
Having an idle issue after I run it awhile. Cranks right up and runs perfectly, but once I take a ride it doesn't idle correctly. Just did a 300 hr. + …
Outboard not starting. Dad put the boat away a couple of years ago without setting it up for winter or storage. The engine has less than 2 hours on it. …
Took the boat out to the lake today for the first time this year. Went to drop it in the water and i could not get any fire. Turns over great but will …
Newbie Mechanic. recently bought a 1986 Classic 50. when I removed the lower unit to replace impeller, 2 plastic pieces fell on the floor. I think they …
The guy who bought this boat used it for panfishing, so he did not need troll control. Am I able to add the troll control rpm button to the handle where …
The boat bogs it feels like there’s something holding it back it runs 5700 rpm at 57 mile an hr which is slower than it used to be by 7 mph when you turn …
I have a problem with vacuum at pulse line for lift pump at vst. I have good compression, I pulled intake to check reeds, they are perfect. I don't why …
I just replaced the reed valves in my motor and now after three trips to the lake the motor runs out of fuel when you go to full throttle. It will idle …
I am looking to buy this motor. Does this year have any inherent problems I should be sure to check out before buying. I have seen it running and it …
The motor won’t go in to forward or reverse. The throttle works fine. There is a button on the throttle handle that allows you to throttle up in neutral. …
Hello. My name is Jason. I live in Florida. Unfortunately my boat sat for 4-5 months and got water in the fuel tank from sitting. I always run rec fuel …
Hi everyone, my engine ran fine for 20mins or so then while on the plane it started to alarm constantly, I backed off to an idle but still in forward gear …
was motoring along nicely at around 30KM/hr when suddenly the motor lost power and shut down but something continued to rattle for about 20 seconds after …
The boat is on a trailer, so any running must be done with muffs.
I was adjusting the shift cable at the motor to find the best neutral position on …
Hi all: I have a problem with starting my 25hp when cold > Does anyone know of a way to go about installing a after market style choke ? The type of choke …
My 1978 Mariner 115 with the CDI distributor ignition system will sometimes completely quit firing. When it is firing the spark will jump my 1/2" ignition …
Hello,I have just rebuilt the hydraulics on the tilt assist ram and they work really well ,however I cannot get the gas accumulator to pressurise the system …
My boat has analoge gauges. I have changed leg and it has a 3 wire digital trim sender. I have a short harness plugged into engine loom and other end is …
Engine has approx 140 hours, it had full 100 hour service at about 80 hours. When it runs for an hour, it develops a miss. At wide open throttle it (mostly) …
Runs and starts great then after running 30 minutes running full throttle top cylinder shuts down and rpms drop from 5500 to 3000. Then i let it sit for …
I have a 2015 Mercury 150 with an older 9.9 Mercury kicker added within the last two years. (When the problem started) Both motors run great on a full …
Motor surges at idle and kills when you bring it back from higher speed. Starts right back up idles great for a few minutes than start surging shift into …
My 2006 ,25hp EFI 4 Cycle has,a, Fuel issue .I can't get fuel to Flow out of VST. I can jump the High Pressure pump fuel flows fine.
I'm getting current …
I bought this motor used and love it. Recently started leaking oil. I pulled the prop and the shaft to replace the seals and realized that the prop shaft …
Parts manual shows needle bearings for center crank bearing. The version I have has plain bearing. Split shell like a car engine. Anyone know what other …
Ran the motor one day and it ran great. Next day started just fine but as soon as got on lake and opened it up it acted like choke was on. RPM'S would …
I'm experiencing a problem at idle both in neutral and in gear. The idle is rough and engine does not change when both center cylinder plug wires are removed …
I haven't had boat out for few years due to heart problems but now want use it. Well start up great BUT the water pump impeller needs to be replaced as …
Starts fine. You can plane out an run for about a 1/4 of a mile an it drops back to a idle an sounds off 2 long beeps an the beeps stops. Motor doesn't …
When trying to achieve full speed with the engine at full trim out it will not hold its position. On the vessel view screen the full trim out is shown …
had to rebuild block which was no problem. When installing the oil injection pump there was an o-ring that looked deformed between pump and block so I …
Hi I’m Mark from Australia.
I have a 1993 Mercury 200hp 2.5 that has just recently started sounding a constant alarm when turning the key.
The motor …
Intermittent loss of power in rough water. Motor doesn’t stop but backs off on throttle and seems like I’m low on fuel.
Motor runs great, no issues in …
I have replaced the starter as it was rusted and seized from some water damage. Motor turns by hand and starter engages and rotates when solenoid is jumped …
my mercury motor has been with my mechanic for 12 months and he cannot resolve the problem. he tells me that the 4th cylinder is not firing but other than …
Engine is receiving no electrical power from the battery to the engine. Tried using jumper leads direct from the battery and it turned over but did not …
When I back off from a cruising speed say 3000 rpm the motor will just die. This seems to happen only after I've been running for 10 minutes or so. Once …
During plane. suddenly the outboard went off (complitelly stopped) the Guardian System started producing a countinuos beep and on the display "SYS Fault" …
I have a 1962 16' Starcraft runabout that had a 1963 100hp Mercury 6cyl tower of power. My kids grew up with this boat and we wore that motor out. I have …
Engine losing power under load. 115 elpto, ran it on some very old fuel inadvertently. It spewed clouds of smoke and died. Replaced fuel, cleaned filters, …
I’m replacing the headgaskets and have a factory manual for this engine and it states 40 ft lbs for head bolt torque and I bought new grade eight head …
I took apart the trim pump the pistons that hold 2 bb's fell apart before I saw which way they go in upper part of pump, on the bottom section there is …
Hello everyone, about a month ago changed all fluids and impeller after noticing water wasn't pumping out piss hole and it was alarming out, got it all …
After planning out and running for 5-10 min the motor losses power. I figured out if I let of the throttle a little it would keep it from shutting off …
After going across the water about half throttle it won’t idle back all the linkage working as it should
I get it started in with power arm forward as soon as I try to pull it back to put it in gear it dies. Also cant start it in N
A good friend of mine let me borrow his boat with a 1999 Mercury 40hp tiller handle a few weeks ago and told me to run it because he barely runs it anymore. …
Mercury 150hp Jet V-6- intermittent RPM drop under acceleration- need WOT to get back on plane, power reduced to half. Fuel pump rebuilt. Possible switch …
Engine runs fine up to 3/4 throttle at 4000 rpm. If you go past that it stars to bog down. When I remove the spark arrestor I can get it to run about 4500 …
Upper engine mounting bolts - One is severely corroded(no shoulders, basically round. The other bolt head still has shoulders but is reduced in size(socket …
The motor starts and will run at 5000 RPM for about 5 minutes and goes into limp mode and wont run any faster than 3ooo RPM. I have replaced all filters, …
I bought a new Tracker bout in 2017 with a 115hp Mercury four-stroke outboard. for medical reasons, I have never had the opportunity to start and run the …
Bought this boat and motor 2 weeks ago, first trip out the boat ran fine for the hour I had it out. Second trip I powered out to some fishing grounds, …
The engine will not shut off using the key switch. This was a used boat purchase, and the engine runs great, I can only shut the engine off using the choke …
Was going about 30mph and the right engine rpms started falling. then it couldn't keep up with the other engine, not going past 2500 rpm's. Then it started …
I have a 2012 Mercury 90hp EFI outboard. If it sits overnight I can start it and it will run fine for 15 to 20 minutes at any RPM. then it starts to shutter …
had over heat problem. replaced impeller and other misc, cooling parts. engine stars and idles perfectly. whwn cruising for only a couple hundred feet …
I was getting my XR4 ready for a compression test. Hooked up the water, turned the engine over and it ran good. I put it in forward and suddenly it took …
I had my family out on the lake a couple of weeks ago in our Triton, 188SF. We had been hanging out on the beach for couple hours and got really hungry, …
My motor seems to be a little down on power. It is missing when idling but not when I’m running anywhere over idle and when all this started the pee steam …
Ran great for 15 minutes even at full throttle. Then I started to troll and noticed a miss once in a while. Then stalled after a while. Would start right …
Looking to buy new 25 hp outboard, have a 1986 9.9, love it , but i need to go bigger, 4 strokes are heavy, enuff said. does the new 25 have the old manuel …
With the boat in the water it runs and goes real smooth at idle. When I get just above idle it has a loud noise. It doesn't appear to be missing. When …
After installing a new water pump, water pump housing and replacing the two seals under the water pump housing water is not pumping with the same amount …
Cannot get ignition to start boat. Has new ignition coil, getting gas, plugs good, carb rebuilt. will not cough even with starting fluid. help
Engine warning beeps and throttles down. Last code pulled from dealer was over-revving. They replaced a regulator module and said it was fixed. Same …
The throttle arm backs off. Cannot maintain speed without holding the arm down.Can't find a way to put tension on the arm.
I am purchasing from another state a boat that has a 2003 Mercury 150 XR6 engine. He states what he "thinks" the hours on the engine is. What I can't seem …
Hi. I have a 2016 150 which is on a Nitro Sport. The limiter switch on the motor is acting up. will lift up but not down. a mercury mechanic showed me …
My son just bought a beautiful 1987 Bass Tracker w/ Mercury oil injected 60 outboard. The elderly gentleman who owned it is not mechanically inclined, …
Hi, Hoping you folks can help me out.I have a 2008 15hp Mercury outboard (F15M) that started making a knocking noise.Here is what I’m observing
- no problems …
2005 40 hp ELPTO 2 stroke mercury runs fine for the first 10 minutes then suddenly starts revving/whailing very high and clunks when shifting gear back …
Fuel pump diaphragm split, when I typified out and restarted the engine it idles at 3500 rpm, tried timing adjustment but it made no difference
I'm having an issue with my warning alarm, at first i would get the one beep when the key was turned on letting me know the system was working correctly …
2005 four stroke 60 horse Bigfoot I was going across the lake wide open at 6000 RPM and then all of a sudden it went to 4500 PMs
The engine sound and …
When running the boat in idle or slow no alarm sound when try to get up on Plain solid loud alarm sound oil is full and water pump is brand new and pumping …
Since late last fall my motor has been giving me fits. After start up I let it idle for a short time. I then engage the throttle and power up. When I hit …
Nothing works (no power) after winter storage. Battery is fully charged, all connections are OK. Almost seems like a fuse. Are there any other fuses …
Engine starts great. Idles great. When given full throttle it takes off great but in a few minutes it starts to slow down. If I keep the rpm's around 3500 …
My boat was running great about a month ago and now it barely wants to start and when i do get it started it just cuts off, i had it going when i rev it …
Hello , i am Wondering if anyone could give me a name for this part . I have Searched and searched but can not seem to find name of this part thanks in …
My engine runs good and revs up fine in neutral but once put into forward it bogs down and will not run faster than bout 35% at full throttle what is the …
My Name is Bruce. I just cleaned the carb. The engine idled fine. took boat out and it would not plane off. The motor started running on just 1 cylinder. …
1982 Merc 115 tower of power making ticking noise at low rpm. Tick increases with speed up to 1000rpm then goes away. Happens consistently whether in forward, …
turn key all I get is a few beeps, no crank. tested battery shows 12.8 volts. is there some troubleshooting guide or outline you can direct me to. I'm …
Starts and idles fine then starts surging when I give some throttle (weeeooo weeeooo weeeooo). Wont reach full power I guess it's probably electrical, …
My tech told me that the magnet on my flywheel is broken up. How much is a flywheel? Should I get a new or used one?
will not shift into or out of gear sometimes
Cable all seem to be moving corrcly
The leg splashes water into the boat. The boat is a Princecraft Amarok DL WS Anyone sitting in the jump seats are guaranteed to get wet.
I removed the lower unit to replace the impeller. I cannot align the driveshaft spline with the crankshaft. I have tried rocking the engine and turning …
Twin Mercruiser 7.4 Engines will not start after running perfect for an hour
The motor will not get up over 3000 RPM under load. However, it will in neutral and in gear in reverse
Trolling out in lake Erie and alarm beeps start in when running kicker motor. Water pump new and running great. Oil level new and full. Not sure why beeping …
I go to start my MERCURY ELPT 115 CT 4 S motor and i get nothing but clicks!!! Batteries (2) are good, it’s in neutral and my safety run switch is on …
Keeps blowing same cylinder this is the 3rd time motor has less than 60 total running hrs
The engine is not firing on cylinders 1 and 4 and is not charging replaced both switch boxes and no change. What should I do now?
I have a 2013 bass tracker Mercury 4 stroke motor only has about 15hrs on it. I dont know the proper maintenance on it so I took it just one time to where …
I have a 2014 30hp Mercury 4 stroke that has been setting for approx 1 year, the gas was not drained. All gas has been removed, fuel tank, hoses/bulb and …
I have a 92 mercury 2.5 efi,200 hp. The bottom cylinder is filling with gas. If you remove the plug and roll it over it sprays out gas, then put the plug …
I have a 1996 Mercury 25hp with built in timing advance in the power pack and when backing off the throttle it take forever to slow down to idle and the …
I’m having problems getting it to run right, we took it out for the first time today, it is brand new engine so we wanted to break it in. It idled fine …
200hp engine blew on my 1999 nitro boat. I found a used 200hp on a wrecked boat. I switched them out and took the boat out. Had to end up switching out …
I have no spark on 2 4 6 I have spark on1 3 5 I switched out outer switch box I now have spark on 4 but not on 2 6 I switched the leads r/w b/w to …
I have a 1980 alumicraft classic deluxe 16.3 ft 570lb with a 50hp mercury 500 thunderbolt and I don't know what prop I need to get. I have been told many …
I recently serviced my lower unit including water pump on my 1998 90hp merc. When I went to put it back on couldn’t get the boat in reverse took it back …
I’ve got a 5 hp Mercury outboard that has a yellow sticker with a water droplet with two arrows pointing to the water droplet does anyone know what this …
Motor started and ran fine all last year. Was starting and running fine when winterized in October, 2018. Got it out to go fishing yesterday. Cranks …
I have a 90 four stroke Mercury 2001. Have a issue with poor idle and stalls. It runs great after take off. But poor idle and motor skake. I have had …
1998 mercury outboard 200hp. Just bought the boat as is for cheap. Previous owner got her up on plane, lost all gauges and at the same time engine went …
I have a 1976 mercury 1150 outboard I have replaced all fuel lines gone through carbs linked and sync starts right up idles great when out on water and …
I was fishing offshore the other day and added oil to my 2013 225hp oil injected mercury optimax that is a dfi model. Covered approx. 100nm and decided …
Bought new solenoids to replace the one bad one. I cannot get the old ones removed. The 3 bolts have locking nuts and are inaccessible. Do need to remove …
The boat was purchased in 2011, so it's 7 years old. however, it's probably has less than 150 hours on it. I haven't run the motor in over a year, but …
I have a 1989 celebrity 181 equipped with a 4.3 mercury and a mercury out five. My problem is it has suddenly deteriorated eloped problem of suddenly …
I had just replaced solenoid and starter on my 2005 mercury 125 outboard. I had taken it out twice before and no problems. On my third trip, I noticed …
I have no power tilt and trim , two wires burnt and do not know what they connected to on the transom coming from the pump and I cant find what they were …
I left it sitting for the winter and I've got no power to any of the gauges, lights, etc. Will not turn over. I took both batteries to be charged and they …
trying to replace throttle and shift cable on a 2015 90hp Mercury outboard engine, shift cable is a problem getting to. Does the rest of wires & hoses …
I have a mercruiser 7.4 lx mpi with a bravo 2 sterndrive.At about 1200 rpm just off idle it surges.I have replaced the throttle position sensor and it …
Hello. We have a Mercury 135L Opti motor & just went out fishing for the first time this summer. We got it in the water and it won’t shift into forward …
I just had a starter professionally installed last fall on my 2005 Bayliner 195 with 4.3 Mercruiser. I started and ran it at home using water and it ran …
I changed the fuel pump and the fuel filters and I still cannot get gas to come through the lines. I am wondering if the cannister filter is clogged. …
When I'm at idle on my 75hp Mercury outboard I hit the trim up on my throttle the boat motor will die and an alarm will sound. When I'm under power and …
Ok fellas i have a 25hr merc and i just got it out of the boat shop today oh its a 85 model and i just replaced every single electrical part on it for …
I purchased a 2006 Crownline 220 EX with a 5.0 Mercruiser with an Alpha 3 drive. Had it out 3 times the first week with no problems. Took it out today …
We have a 22 ft pontoon boat with a 115 mercury verado. It has a 21 1/2 inch prop with. 15 pitch. The prop seems to be overreving and the boat is slow. …
I have a 2004 mercury Mirage 175HP 6 cylinder 2 stoke Boat starts and idles with hose hooked up to outboard you can give it full throttle runs and sounds …
I bouaght a 1991 15hp Mercury outboard ran great first 15 times out then one day it would not start at all. After going over the motor I found a ground …
Motor was running fine got hot fixed overheating problem compression 120 on all three cylinders boat will not get wide open throttle bogs spits and sputters …
I was running wide open i slowed abit hit another boats wake hit hard nothing out of the ordinary than the motor bogged down barely would stay on a plane …
I’m trying to figure out what’s wrong with my boat. I either burned up the starter/solenoid or there is a killswitch and I don’t know where it is. I have …
My engine is currently with a mechanic who I frankly think is extracting the urine. The engine is 87 and he is telling me it need a new flux capacitor …
When i go full throttle, for about 2 minutes, it feels like my motor is dragging. Won't get to full speed, then all of a sudden, without really doing anything, …
Same boat that would not shut down. I fixed with a kill switch. This a 79 bass Tracker. I was checking circuits when the engine started to smoke? It was …
I just had my lower unit replaced but now I’m noticing an issue where the engine at low throttle , you can hear it occasionally lose power or not purr …
I get a high pitched squealing sound when I turn on the motor on my 20 foot Sunchaser pontoon. Motor is a 60hp Mercury 4 stroke 2013 model. Has run and …
Boat runs great as long as your going. Once you shut down and anchor for awhile, will crank but never fire. Was told that there is a diode that is probably …
Looking to install a trim gauge on an 87 procraft 1510 bass boat with an 85 mercury 35hp 2 stroke. Does this motor have a trim sender? Where would it be? …
Hey there my optimax 200 keeps dyeing when I’m boating it’s like someone hits the kill switch. I put fresh gas and I eliminated the inline fuel filter …
I have a 1979 16' bass tracker, i am restoring. I have the engine work done. It runs fine now! However, it will not shutdown with the key switch? I have …
I have a brand new Mako Pro Skiff with a 115 Mercury 4 stroke, I accidentally left the battery switch in the on position, for like 2 days. Today I noticed …
I have a 1990 bayliner 3255 avanti sunbridge cruiser with 2x mercruiser 350 mpi petrol motors. My problem is that the starboard motor won't start without …
I am having massive problems troubleshooting my twin 2002 225hp optimax motors ,both motors are running well ,but I had both trim motors working well ,then …
Hello I have a late 80s mercury 60hp 3 cylinder I bough it recently it run perfect the problem is the gay who I dot it from took all the wiring of the …
Hi, I just bought this engine, compression is good on all 4 cylinders, the boat is really hard to start and it will only start with fast idle lever up …
spring 2016 start up motor started perfect, idled perfect but choked and coughed at any thing over 2000rpm. Dealer replaced the fuel pressure regulator. …
I replaced the linkage on the throttle body (the old one broke last fall, and I had to make a new one as they are out of production) and now when I start …
My bass boat has a 08 mercury optimax 200. After launch and idling out of the no wake zone when i was trying to plane off i had an intermettent alarm …
My husband has a bass tracker 75hp merc. motor and it is I think about 17 ft long. When we are in the boat traveling quite a distance to our fishing spot …
I have a 2015 Cypress Cay Seabreeze with a Mercury 90hp four stroke. When cruising around at half throttle, the lever stays put and I can let it go, …
With the Master Power on, the 20amp fuse on the engine block will blow intermittently when the engine is running. It only blows when the engine is running …
Last sunday went out to my local lake early in the morning, 6:30 to be exact, i let my motor warm up like i always do, no smoke, started out from the boat …
So I have a nitro x5 2010 with mercury optimal 115 on it. Recently I’ve been on the water and motor would not start. I turn key and it beeps like normal …
I have a 2004 Merc 225 that takes forever to start. I usually have to take the cowl off and use the manual choke. does anyone know what the problem might …
Hi, I have a 2002 31’ doral and my temp fluctuates from 120 (the lowest temp), to 165, then maybe 120, then to 170’s, then drops to maybe 130, and keeps …
I have a 2016 Mercury CT 115 hp engine in a 21’ pontoon. It continues to run hot and cavitate at full throttle. When I back the speed down 5 mph there …
My 1993 Bayliner 2250, with a 4.3L mercruiser, electronic ignition ,2 barrel carb. will start up quick when cold. However after making a run to a fishing …
have 115 2-stroke(has 2-4 system)idles on top 2 cylinders/ above 1800rmps runs on 4 cylinders, anyway- when shutting down engine after running fast or …
So I haven't put my boat in the water in a couple months. Pulled off cover and did some inspections to the batteries for corrosion on wires and terminals …
I'm getting spark at all cylinders but boat won't start boat was running and seemed to be getting harder to start each trip I'm new to boats so I was clueless …
I'm having a problem with my 260 mercruiser. It wont rev up, has no power and blows smoke. Out of the water it runs fine. I put it in the water and its …
Hello and thank you. I have sold my 2017 Merc 4 stroke and need to disconnect from the transom and have it hoisted into my pick-up so I can deliver it …
Motor starts and runs decent after recent purchase. rebuilt carb and fuel pump and now not sure how to make sure the engine is charging my battery before …
I have a 2005 Chaparral sunesta 236 with a 5.0 mpi and a bravo 3 outdrive. It recently started throwing an alarm (2 beeps every minute) when I go over …
My pontoon hasn't been run much in the past 2 years. It would not start and we felt it was a fuel problem. We rebuilt the fuel pump and replaced the fuel …
Hey everyone, I have a 1997 Maxum 1900 SR with a Mercruiser 4.3 XL Alpha One I/O. Lately, my trailering button and my up button on my remote control is …
I recently purchased a 93 19' Rajin Cajun with a 92 Mercury XR4 BlackMax 150. I bought it from the original owner. I would like to know how many hours …
I was told that you should be able to put your hand on both manifold while the boat is been running for a while and be able to leave your hand on them? …
I am trying to help a niece with a outboard engine problem. The motor belongs to her school's rowing team. There is a red light on the handle near the …
I have a 1999 Mercury EFI 150. My problem is when Im cruising at any speed the motor feels like it his hitting something, a clunk will happen and the the …
Engine has been running good and all fuel filters have been changed recently. The other morning heading out of the marina I was idling out. Leaving the …
I have 2 engines and seems like my port side engine always have problem on over heating if it hits 180 degree.
Recently I have changed the engine oil …
I have a 1995 mercury XR I 150 that I took out on the lake and noticed it would bogg down when I was trying to give it throttle several times and never …
I have a 150 HP Merc outboard on a 20 ft runabout. Everything worked perfect until I had a power steering cable put in. Now the in dash fuel, speedometer, …
This is the first problem I have had with this boat (2002 Triton TR176) since buying in 2008. Don't use it often so had to replace starter battery and …
Working on 1979 165 hp mercruiser I/0
Was cruising across the sf bay and boat made a pop like it came out of gear and i lost drive to fwd and rev and …
2000 mercury 9.9 Bigfoot sun tracker pontoon-my 20 amp fuse keeps blowing in motor..no power to start , gas gauge doesn't move and red oil pressure light …
We have a little 18' SeaRay with a Mercruiser 3.0 that just did something very unusual. This was our first time out for the season. Started fine and …
Last year motor starting throwing low voltage codes and put itself into guardian mode but would work fine after shutting it down and waiting about 5 minutes. …
I installed another battery and I arked the cables and lost all power to motor, the safety kill switch is making a beeping noise cant seem to find anything, …
Was on the lake running my 150Mercury 2.5L XRI outboard on my 1993 champion bass boat when it just died and fell on its face. Tried to start it back and …
I have a 2005 60hp Mercury EFI 4 stroke, and sits on a 4.85mtr Stacer. So far its been reliable, quiet and economical (done 180hrs) but its just started …
I have a 2009 mercury 25hp 4 stroke EFI. It has been sitting for about two years with no fuel in the system. Now it will not turn over. The flywheel …
I have a 1979 mercury 140 HP outboard that is very hard starting when cold. Seems to be a fuel issue. When starting for the first time of the day or after …
Hi everyone. 2002 mercury 60 hp 2 cycle no power to tilt and motor motor won't crank but the choke button on starter key still clicks. I am getting 12.64 …
I have a 1976 model mercury 850 85 hp outboard its been stored for years has great compression but you could see where someone had patched in some replacement …
I have a 2005 mercury 115 4 stroke that leaked a small amount of oil down the lower end cases. the oil level is 1/2 qt low. can anyone tell me where the …
I have a 2006 mercury 60hp bigfoot 4 stroke efi that will not start. Went fishing today and the motor started fine, and ran great. Turned it off to fish …
Starts but will not stay running. Changed all gas components, stator, trigger, plugs, choke actuator...it seems one plug does
Not get hot and has no wear. …
I am a Finlander here in beautiful Wisconsin! Bought an older Carver Santa Cruz 26 (1983) and restored it with care to it's original beauty! I love the …
So I bought my first boat and well after cleaning the carb well and adjusting the idle I got the boat to run great while on muffs. I took it out the other …
hi there, i have an older merc that on a recent trip started no problem first pull it would run all day for a couple of days then next morning nothing …
I have a 1987 ebbtide with a 3.0 mercruiser
I have replaced valves rocker arms cam shaft rebuilt carb plugs wires points condenser cap rotor button …
Over the winter I rebuilt the fuel pump cleaned carbs paying very close attention to mixture screw locations, replaced fuel tank and fuel lines also replaced …
I recently received a 1988 Bayliner Bass with what I believe is the original Mercury "Classic Fifty" 45hp outboard. I was told by the previous owner that …
Not sucking gas through lower carb at idle like the top carb does. Need help I'm just curious if this is normal as I just got the boat and after tuning …
I have a 2006 Mercury Optimax 115 2 stroke on a 2006 Triton Tr176 which everytime I run it I get an alarm at 4100 rpms.I can sometime run through it,with …
I charged my batteries for a dry test the other day and both motors turned fine took for sea trial and right engine shut down as soon as I have throttle …
I have a 1984 Mercury 115 hp outboard. it was a little low on fluid. After adding fluid it worked ok a little temperamental at switch but it worked. This …
I was going down the lake and my mercury 200hp started losing power and then it made a noise and it wouldn't crank back up and there was no beeping warnings …
I have a 18ft galaxy with mercruiser 120 I/O. boat revs great (4000-5000 rpm's)but only getting 2200 rpm's in gear at wot. currently has 23 pitch prop …
Everything works fine, but if i give it power in reverse,ing. On the water, everything appears to work f the motor raises up. Also, when i use my transom …
My Mercury is a 2013 model and my workers ran 2 stroke fuel for a day then I changed it, it ran fine for a couple of days then in idle it overheated and …
I have a 1996 Merc 2 stroke that is having some issues. The motor starts regularly but when I put the throttle down it just seems like the motor is bogged …
I have an older model 35HP Mercury Outboard motor. Did not use it all year due to health problems. Started it today, 9/27/15, to get it ready for winter …
1987 mercury classic 50 has no spark. I went out one day and it worked fine then the last time I went out and wouldn't fire up at all. There is no spark …
While driving my 24ft Bentley pontoon boat, all of a sudden my max rpm and max speed dropped. I was getting around 6200 Rpm at 27 mph. Now it won't get …
I have a 1990 Bayliner with a 350 and a QuadraJet Carb. It runs great at times, but at other times I cant even get it off the trailer. I have learned …
I got Mercury 75 1990s alarm started beeeeeeeeeep soon as I turn key wivout starting it but it keep beeping constantly until I turn key back a bit is this …
I just change the starter , voltage regulator, Igintion switch & solenod. Motor ran like a kitten. I ran it for five minuties than I went to turn it off …
So I took my boat out for its second outting this year , the first time outting we were on the water for 4 hours motor worked awesome , second outting …
Hi recently purchased boat went out eran fine Next time out drove 20 min than idled for 20 went to take off no power trimmd motor up to check if any thing …
Started my 225 optimax for the 1st time this year and noticed the water was not pumping out of the pee hole. Someone told me it needs to warm up before …
I have a 2000 Mercury Optimax 135 hp with only 50 hours on the motor. The motor idles great, but when I advance the throttle in accelerates for about …
I changed the water pump impeller , I am having a lot of trouble getting the shifter splines aligned so the shifter works properly. I have spent hours …
Was going about 4500 rpm and all of a sudden my 2002 150 hp Optimax starting makinf a loud ticking noise. Didnt seem to lose power but of course I slowed …
I have a newly rebuilt motor and I just rebuilt the deck, replaced carpet, and other items on the boat including the throttle and cables. The boat ran …
We have a 2003 75 horse merecury outboard it has plenty of oil when we go real slow our oil alarm comes on when we go fast is goes off what could be wrong? …
Turn the key on, alarm chirps as it should. Recently though, after starting, the beep beep oil alarm continues. Checked both oil tanks, and the remote …
I have a 90 hp merc 1976. was running great for several days and then would beging to run very rough at all trottle positions (even idle). Starts fine, …
1996 60hp outboard starts and runs great, won't re start . We just purchased a used pontoon boat. It has a 1996 Merc 60 hp. The thing starts first attempt. …
My 2004 Mercury 25 HP engine only runs only on one cylinder. The bottom cylinder works fine and the engine will run with only the bottom firing. If I …
The engine will start, idol and run through all the rpms but when it's in the water under load it will not power up and run above 10 mph. It will not …
Well it started about a 3 months ago and I havnt ran it sense then. It will not start I think I may have mixed my fuel to rich I emptied my tanks got new …
I have a mercury 60hp outboard 1983 motor. I recently had the mid-casing replaced because it was cracked. The motor is running very well but after approx. …
The motor runs great out of the gate for about half an hour then when I go to throttle down it boggs down, you can tell that it really wants to run when …
Starting my engine is super easy but when I run it for a while and turn it off and wait about a half hour and go to restart, it will start but it takes …
I was having a problem with my boat that when I turned the key it would turn but not start, and I was not getting spark from the plugs, so I ask someone …
I have a 1988 Blue Water 18 Ft Eagle Runabout with a Mercruiser 175 I/O and the steering has become hard, not locked up but difficult. I've checked the …
I have a Mercury 115HP ELPTO (1989) it runs terrific for almost exactly 40 minutes than dies, it won't start or fire for about an hour than takes right …
I have an 2003 Mercury 75 HP 3 cylinder outboard, I dropped the lower unit to change the water pump impeller, reassembled everything, but now have no …
Just bought this boat had to change shift cable and do minor maintenance but can't get the I guess you call it the neutral rev button to work I push it …
I have a mercury 200 that accelerates great but on throttling back hits a point where it decelerates rapidly (30 miles per hour to 10) in the space of …
I acquire a 1988 Pro 17 Mercury 40 HP I never own a boat . My first question is how do i go about starting the engine up. Do I need to mix a certain part …
Hey guy I have a 2002 mercury 60/40 jet and it starts fine and will run great but when I back off the gas it runs but it sounds like it is coughing and …
I have a 2005 40 hp Mercury 2 stroke 3 cylinder. I am battling to get it started. Eventually after opening the throttle and about a hundred pulls it fires. …
My old trim motor on my boat recently went out, so I replaced it with a new motor and pump. The new trim motor works properly but for some reason when …
My brother bought a 1980 40HP Mercury for his boat. It idled a bit shaky when he first bought it so he put fresh gas, cleaned car and I believe adjusted …
I have a 1993 murcury tracker that wont stay running unless I continue to press the choke. This was all of a sudden thing. If I do get it running and …
I'm having trouble starting my outboard engine on my boat. There is fuel in it, spark plugs are new, oil is full. It seems as though all obvious reasons …
Hi all i have a 1982 40 hp 402 mercury.Took it out a couple of weeks ago and it broke down..
Not sure what the problem is..Has plenty of spark/fuel and …
Hey all took my boat out couple of weeks ago
And it broke down....Cruising along at about 10knots it just died. And would not restart.call vmr get towed …
The above outboard EP system puts the motor into limp mode when engine revs get up to around 3,000 revs. This only happens when the boat is in the water …
Ran my outboard merc for a few hours in rough conditions. When I got pack too the dock the motor died and noe it whont start. I checked the fuel for water …
2004 Mercury starts and runs but sputters and backfires under load. Also it is not charging batteries. It acts like it doesn't have enough spark. I don't …
I need some help about the subject, Just 2 days ago, I tested the boat by keying the ignition.
all I heard is just click everytime I turn on the key. …
I have a 2008 Mercury 90 EFI on my 170 Montauk. 4 times in the past two weeks the engine loses all power but within the first 5-10 minutes but still stays …
I have a 2008 Mercury 90 EFI on my 170 Montauk. 4 times in the past two weeks when running at different speeds it feels as though the engine loses all …
I have a searay boat with a 125 mercury 2 stroke.it has sat for 10 years being started once a year or so to make sure she ran. It runs flawlessly, starts …
Hello I have a 1980’s mercury 35 I prime the bulb and starts right up idles well then it stalls I can keep priming the bulb and it will run fine and in …
i have an 83 mercruiser 120 i/o that will start up and run mint for about an hour or more after trolling then motor will quit and sometimes start up hard …
It's a 1984 Mercury IO. Strong motor when she's going. 50% of the times I will run her on the water for 45 minutes and shut off in the water...when I try …
My 2005 Mercruiser 5.7 makes a rattling come clacking noise until it gets warmed up.
Change the exhaust flappers but no change.
Not sure if its connected …
have a 2002 50 hp mercury outboard. Always has been hard to start and to keep idleing. once i do manage to get it into gear i can only go at a slow speed. …
I own a Stratos 264 with a 2001 Mercury 150 XR6. Every time I try to come out of the hole the RPM's spike to around 5900 RPM's. Is it blowing out of the …
I am having trouble with my mercury engine, when I start out the engine runs great I have ran it up to 2hrs without a problem. Then when I stop to fish …
The motor wasn't idling properly, it would rev up in the neutral position and run high when in forward accelerated position. I was waiting to put boat …
My fresh water header tank loses about one litre of water after each trip. What could be the problem? The motor runs at the correct temperature and does …
The primer bulb on the 1995 Mercury outboard was replaced last year with the standard Mercury primer bulb. Usually the night before I go fishing, I pump …
I recently swapped batteries on my boat and am now having issues with the voltage meter gauge stuck up around 15V even with the power disconnected. When …
Bought a 1989 boat ran great for a year. Blew the switch box, it also had a melted rectifyer. I ordered and replaced the Stator, trigger, Switch box, rectifyer …
Mercruiser 305 cuts out at 3500 rpm, when throttle pulled back engine returnes to normal. Changed fuel pump, new carb kit, swapped all electronics with …
My inboard/outboard 4.3 mercruiser works intermittently. Starts sometimes other times it clicks and won't start. Is this a starter issue? or something …
Boat was running just fine, tried to start it after a week away from the lake and it cranks but does not turn over. Then noticed no movement from the …
I have replaced the battery and gone through all visiable fuses and they look good. The horn, blower, and bilge all work. The instrument panel does not …
i have an inboard mercruiser 4.3 lx i have no problem turning on the engine and increasing the rpm in neutral, but when i put the boat in the water and …
I bought my 2007 mercury optimax 90 new in 2007. Warranty is expired and it recently got very difficult to shift to reverse. I took apart the control …
first the motor i just bought had bad fuel pump,replaced that. now it has a weak spark. replaced plugs and wires plugs fire is very weak tested stator …
How do I winterize a omc 120 hp Mercury with outdrive. New to boating and would like useful info on storing boat for winter and any maint. tips would …
tach frequently "buries" itself or shows rpm far above actual engine speed. returns to correct reading after hitting a wave or a change in the trim - usually …
Hello, I have a 1999 Chapparal with a 7.4L MPI engine. My engine has only 135 hrs since I do not feel compfortable taking the boat out very often. When …
i posted an article about hard to get on plane with a tr 21 triton and this motor also additional comments i forgot about at the time is when i load this …
I just bought a Bayliner with the mercruiser engine. Last week I wanted to try it and went to a lake but it did not have any force and did not speed at …
I had a problem with my 60hp 4 stroke Mercury Bigfoot. Motor would not idle down and not shift into neutral. Local dealership found a tar like residue …
I have a 1982 Larson w the 470 mercruiser and I purchased a set of trim cylinder that have the connectors at the bottom of the cylinder and do not know …
150 Mercury "Blackmax" outboard engine(1985) -- power tilt is not working -- engine will go down, but will not go up. Makes a clicking noise when switch …
Motor wont go over 4000rpm 25 mph on flat water .
every now and again surges up to 5500 for a few seconds.reduce acceleration manually then increase same …
Just got a jon boat with a 6hp mercury 2 stroke. Runs fine for about 15 minutes, then dies. Can't pull to start up again until it cools down. Then repeats …
I have a 1987 Sea Ray Seville with a 4 cylinder I/O Mervruiser. When I put in the water for the season a few weeks ago, all seemed okay. A couple of …
I am buying a boat from my father. Last night we took the boat out on the river to give it it's first trial run of the year. The boat started fine and …
I can't get my port-side engine to stay running. A while back I thought I might have some bad gas, but the problem seemed to straighten itself out. I let …
I have alpha one mercruiser and it will not shift in reverse and forward. I can get one or the other but not both. Tried every way possible to adjust cable …
I have a 1981 sea raider boat with a 70hp mercury triple cylinder 2 stroke motor. It wasnt run in 2 years and i fired it up the other day on 2 year old …