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I decided to create a new post since I figured I'd dive in to the engine a bit. It's an 87 Ski Nautique. And I am trying to stay optimistic about this motor given the difficulty of finding a rebuilt 351w. at this moment. I pulled the intake manifold which looks to have a crack where the thermostat housing is. Then I pulled the head hoping that was the cause of my 60psi on one cylinder and 90psi on the other 3 cylinders in that bank. But gasket looks to be in good shape. I did find some water in the low compression cylinder which I soaked up with paper towels.
Would water in that cylinder be detrimental to the piston rings if only run for a few minutes?
To give a quick rundown of what happened. The motor hasn't been run in years. I started it up and it wouldn't stay running at idle(has a rebuilt carb that hasn't been tuned). After shutting down the first time after only a minute or so, I had trouble turning it on. After a little bit it started up but within a few minutes didn't sound right so I killed the engine and found milky oil upon draining.
Would water in that cylinder be detrimental to the piston rings if only run for a few minutes?
To give a quick rundown of what happened. The motor hasn't been run in years. I started it up and it wouldn't stay running at idle(has a rebuilt carb that hasn't been tuned). After shutting down the first time after only a minute or so, I had trouble turning it on. After a little bit it started up but within a few minutes didn't sound right so I killed the engine and found milky oil upon draining.
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