Originally posted by 300EE320
[BIf the head gasket is leaking coolant into the cylinder you have a problem. Cranking the engine with one cylinder full of coolant can "hydrolock" the engine, usually resulting in a broken piston or bent connecting rod. You will have just "blown up" the engine.[/B]
If there is a chance coolant is leaking into the combustion chamber, heed these words.
I saw a Chev engine that had hydrolocked on it's coolant, and it ain't pretty...