bryandavis
New member
I purchased a new boat and drove it about 20 hours. I stopped to get fuel and could not get the engine to start back up. It was hard to turn over (as if starter was failed or low battery). I checked the oil and found it was WAY too full and thinned. Drained about 4 gallons of oil/gas out of engine.
I have pulled plugs. No water in cylinders or drained oil. Engine will not turn over with plugs in, but will turn over with plugs out. I waited 24 hours, same result. I have cranked engine over for about 3-4 seconds with plugs out. No globs of oil expelled. Replaced plugs same result, slow crank, no start. I have added new oil to "low" end of dipstick range. I have replaced starter with new & battery with new, fully charged and checked all power leads & connections.
What could the problem be? Hydraulic lifters? Valves? Any suggestions on tests to run? I'm thinking a compression check on compression & exhaust stroke may offer insight. But, I don't know what these numbers should be.
2nd engine seems to be developing similar issues but will still start. I intend to replace/rebuild both carburetors (Quadrajets).
Engines are Crusader Model 350 (454s), SN#51764 & 51767, 1985 Marinette 39' Double Cabin.
I have pulled plugs. No water in cylinders or drained oil. Engine will not turn over with plugs in, but will turn over with plugs out. I waited 24 hours, same result. I have cranked engine over for about 3-4 seconds with plugs out. No globs of oil expelled. Replaced plugs same result, slow crank, no start. I have added new oil to "low" end of dipstick range. I have replaced starter with new & battery with new, fully charged and checked all power leads & connections.
What could the problem be? Hydraulic lifters? Valves? Any suggestions on tests to run? I'm thinking a compression check on compression & exhaust stroke may offer insight. But, I don't know what these numbers should be.
2nd engine seems to be developing similar issues but will still start. I intend to replace/rebuild both carburetors (Quadrajets).
Engines are Crusader Model 350 (454s), SN#51764 & 51767, 1985 Marinette 39' Double Cabin.