Have a 1989 Mercruiser 4.3 liter with the Mercarb on it. I read Don's post on fuel problems. The problem I am having is the boat runs fine on muffs but when I get it in the water it dies when trying to get the boat on a plane. It idles fine and starts fine. The carb was rebuilt by my neighbor who is a mechanic. The reason I had it rebuilt is because it was bogging right before wot. I guess I should have left it alone but to late now. I checked fuel pressure, filter and all gas lines. I also tried opening the gas cap in case it was a venting issue. Any help would be appreciated.
