Originally Posted by delmag
well, it's possible that it's a head gasket. there also looks to be a cooling water passage
right next to the exhaust port. i figured that's where the water came from but how it mixes with the oil, i don't know.
Well, If a head gasket has blown - allowing water from a cooling gallery to be sucked into the cylinder on the suction stroke - then when the piston moves up in the compression
stroke, there are a few unwelcome results that may occur:-
1) The worst, (water not being compressible - in liquid form) the piston's connecting rod and/or piston may be irreparably damaged.
2) The next worst, (water is vaporized and is compressed) this vapor mixes with the diesel
vapor (produced by the fuel
injector) However, the continuous introduction
of water may consequently damage the injector's nozzle, resulting in failure to ignite the diesel
3) The next, water on the compression
stroke is forced Down past the piston's compression ring/s into the lubricating oil - resulting in corrosion
of bearings, crankshaft, cylinder liners, rings, valves, valve seats and guides etc...