My motor runs good when no cooling water is being pumped. As soon as I put the motor in water it kills the engine. I ran just fine in May, I took it out for a 1 hour crusie. Then I parked it until June. Then this problem came up, at first it just wouldn't idle with some noticeable powerloss. So I had the carburators rebuilt but still the same thing. I'm getting water into the cylinders some how is what I think. I checked the head gaskets and even applied a little gasket sealer but it didn't seem to help. The cylinder walls look great with not noticeable cracks. The powerheads were rebuilt three years ago and bore .040 over with little useage since then. I think its a gasket somewhere what do you think could be the problem, it seems to be affecting the compression on the right side as well. Left side compression is around 100 and right side is between 60 and 90! The weird part is the boat ran just fine in may from the time I unloaded to load no indications of and future problem Then all of a sudden it won't run. Frustrating! Thanks for any input
