I previously posted saying I rebuilt my carbs and on the next trip to the water burnt a hole in the lower piston. I had the block bored and my parts will be in today. Everyone suggests that carb was running lean but when I took it apart it looked brand new and the bowl was full of gas just like...
I recently purchased a boat with an 02 mercury 90. It would not run right so i cleaned the carbs, checked the compression ( it was fine on all 3), took it back to the water and it ran better but not great. I took the plugs back out and had no conpression on the bottom cylinder. When I took the...