Yes it is a three cylinder, I have had a shop check the motor out it runs good until you put a load on it, compression is good, prop has been changed and is correct. Check out the video. It acts as if the prop is spun but it is new.
I have a 1987 90 hp merc motor that I have had checked out a couple of times and have been told it runs great and compression is good on all cylinders. The problem it gives me is while underway I can not get on plane it rev's up as if the prop is spun until I lower rpm's and then it continue at...