Trying to help out a friend w/ medical problems on his boat diesel, an OM 636 four cylinder thats been marinized. After going through the whole starter and fuel system, got it started, and within seconds as the oil system pressurized it started gushing out gray oil out of a tiny orifice at the back of the engine where it has no business coming out. Also started coming up the crankcase breather hose into the air intake obviously getting water into the oil somewhere; cracked block? shaft seal on the water pump? head gasket? Any help would be great. Engine actually ran fine when it caught, not rough or uneven.

The oil is coming out of the flywheel cover! That means some sort of major seal blowout right?

Figure out how the water is getting in the oil first. I'd check the exhaust manifold first.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13