Talk:2001 Oldsmobile Aurora
leaking head gasket
I flushed the coolant system and replaced the thermostat and radiator, idled it and it was fine.... Until I drove it and got up to 60 and it started to spike in temp. Tried the "Cadillac Pills" and nothing. Seems that it's a leaking head gasket that puts combustion gases into the coolant system creating steam and air pockets and over heats it. So my last ditch effort will be to flush the system and add the Blue Devil gasket sealant to try and repair it otherwise it's going to be tearing the head(s) off and replacing the head gasket and head bolts and checking the head surface.
pressure in the system is building so fast
I am now suspecting a Blown head gasket as the water Jacklet builds pressure too rapidly in my opinion. I really dont want to Tear the top of this engine
I figured out that the pressure in the system is building so fast that when the thermostat tries to open it cant overcome the High pressure the Radiator cap is 18 Lb So I bought a 7Lb Radiator cap and the problem seems to be fixed.
the 7Lb Bleeds off the exhaust gasses and keeps pressure from going above 7Lbs per square inch now the thermostat can successfully open
Auto Zone part numbers are 7018 = 18lb I now have 7007 7Lb wow now I can keep the car and drive it and not have to worry about the thermostat sticking
