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Message:: [QUOTE="Mad dog logistics llc, post: 12304589, member: 134301"]I blew a head gasket and replaced it (checked liner protrusion it was good) engine hydro locked after it shut down. Towed it back. Took the truck for a test drive drove fine (engine light came on code 55 nothing to do with water) When it was sitting at idle I noticed steam out of the blow by tube and water drops. I pressured tested the radiator 17 psi after finding some loose claps it held pressure. Changed oil thinking maybe something was left in the oil and it was burning off. Still steam and I can smell the degreaser now ( put in to clean system) out of the blow by tube. I dropped the pan nothing leaking out of the cylinders or anywhere underneth. I did the bottle test for the head and nothing. Im turning the engine with the tool because I thought it might be the water pump (its happen before didnt leak until you turned it but leaked out the front of pan in a c10) still no water marks under the engine. I havent checked the air compressor yet. Im still thinking water pump because it was pushing water out of the radiator when the gasket blew.[/QUOTE]