Hey, got some questions on how this water system works. First I will explain whats happening. Boat was running great all day last weekend. Shut it down after boarding and it wouldn't roll over at all when we tried to start back up. Checked water temp and oil. It all checked out great. Had another boat jump us and we started up after struggling for a while. Ran right to the marina and loaded up. When we got home the oil is very milky.
Here is what we have done. Started with a compression test. We can't get the motor to roll over as freely as it should, so something is hindering that. The compression was weaker than would like, but if we get things rolling over better it may go up. Compression was consistent at 95-100. We drained the water and unhooked the hoses from the exhaust manifolds and sealed them up. Then added air pressure to the water system. It is going down slowly, but not much. so I don't think we have a large leak somewhere. with consistent compression, that seems to rule out head gasket and such. Right??? Father in law is my mechanic on all this and he is curious on the exhaust manifolds, what keeps the water from going back down the exhaust since the pistons are not a perfect tight seal?
I know this is long winded but we basically have a starting issue, charging issue or something along with water in the oil and can't find an obvious reason for the water in oil. any feedback would be great. Thanks, cody