I think first thing to do is a compression check and find out if each plug wire will jump a half inch gap with a needle point spark tester to eliminate an ignition problem then go to fuel diagnosis
Nov 30, 2013 Rating
2000 rpms by: Anonymous
ya make sure all your fuel lines are clean and not varnished up from sitting all them years, take all the lines off that you can and shoot some carb cleaner threw them and make sure they are clean and not bein restricted by dried old fuel.
Feb 13, 2013 Rating
Wrong Adapter by: Paul
I had that problem with a 115 Yamaha after i changed the fuel line from the gas tank to the motor. The guy at the marina sold me the WRONG Adapter Different size motors takes different ones or you will not get over 2000 RPMS. So make sure you have the right one for your motor. Good Luck
Jun 26, 2012 Rating
70 HP Evinrude by: Chuck
Try Sea Foam in your fuel. Most times setting clogs up jets that Sea Foam or any other fuel and injector cleaner will disolve. It may take awhile, but I would run it for at least a couple of hours and let it set, then run it again. You may have to do this several times, but It's a cheap fix.
