Mercury, 1075412jd, 1990

by Matt Cant
(western Australia)

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 still get up on the plane but doesn't jump out the water like it used too? Also full throttle used to be 30 knots and now I get about 25 knots. I have had the carbies cleaned, fuel pump replaced, spark plugs replaced as well. it has made a difference as before i did this it was only getting 16 knots full speed. Also my compression is 110 over all three cylinders. any help would be greatly appreciated