Hi guys. I just bought this boat in non running condition for a good price because of this issue. I was told it has low compression in one cylinder and thought may need a rebuild so priced accordingly. When I put the compression tester on it it turned out to be the two middle cylinders. Compression was 165,60,60,160 so I thought must just be the head gasket. I pulled the head only to find it looked good however the exhaust manifold gasket was blown out between those two cylinders. Is there any way that is causing the low compression issue? It wouldn't make sense to me but I'm not a boat mechanic. I'll add some pics of the gaskets. I don't have a leak down tester so I didn't check that before pulling the head off sadly. The motor is a 2005 with 200 hours on it.
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