I had the same problem. Turned out to be a clogged water seperator.
Mercruiser 220hp no top end
I have a '99 searay 21' bowrider and this weekend while running i am fine up until 2200 rpm but when i try to plane off my rpms drop and the engine dies. When i am in neutral i can rev the boat fine, it just seems to happen when the engine is under load. Anyone have any suggestions on what it might be?? Thanks for your help!
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After changing the water seperator,how long did the problem go away for. If the problem was gone for 10-15 minutes, maybe the filter clogged again and the problem returned. I hate to waste money and be a parts changer rather than find what the problem is. Is there a way of using a portable fuel supply to eliminate the on board fuel tank.
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