Here is what I have: 1996 Mercury SeaPro, 40hp, 2-stroke, 2cyl, tiller handle.
Symptoms, rough idle, will gain RPM until about 1/4 - 1/2 throttle and then, only run at a little above idle from 1/2 to WOT. The engine will not move the boat above trolling speed, which normally runs 27mph at...