Enormous Amount Of Water Pressure In Radiator

Asked by Kelly Mar 30, 2019 at 05:52 PM about the 2004 Chevrolet Trailblazer EXT

Question type: Maintenance & Repair

I have a 2004 Chevy Trailblazer it is building
up an enormous amount of water pressure I
have replaced the water pump and the the
thermostat & radiator can somebody give
me any answers

2 Answers
101,745

KenF answered 5 years ago

Ditto to above. Check for hydrocarbons aka compression gases in coolant, most auto parts stores sell or rent "Block Tester" for this. If it checks positive you have a blown head gasket over pressurizing the cooling system.

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