Is my head gasket blown

Asked by GuruWL7SX Mar 26, 2020 at 12:31 PM about the 2008 GMC Yukon XL SLT 4WD

Question type: Maintenance & Repair

Replaced Radiator and filled with new antifreeze. A
week and a half of driving all is fine. Today I notice
heat running cold look at gauge and it's climbing
shut off engine check coolant level is fine. Milky
white oil under cap but dipstick is clear.

2 Answers
2,220

RickMN answered 4 years ago

You'll have to do a cooling system pressure test, combustion gas test and a cylinder leakdown test to confirm/deny head gasket failure. Big question is: Did you bleed the air out fo the system after refilling with coolant?

Mark helpful

Roger answered 4 years ago

Hi, I have a 2002 Honda civic ex lhd d17 engine that is giving me a headache. It starts but and drive but the temperature and rpm gage does work,also the the isn't changing. What do u suggest?

Mark helpful

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