Take the radiator cap off. Start the engine and watch for bubbles. This is a quick check. If you want a better check use a compression tester. Check all of the cylinders. They should all be similiar. If one or two are low you probably have a blown gasket. There are other causes for low compression, but they will all require opening the engine to fix. ANSWER Is your coolant temp gauge reading different readings like hi then low and back? Is there any white smoke coming from the exhaust? Is your engine running rough like 1 cylinder is missing?
You can also borrow a tester at Autozone to test for blown head gasket. I believe it tests for exhaust gases in your coolant.
The 3.8 GM V6 is prone to blown intake gaskets much more than blown head gaskets. The blown intake gasket causes a loss of coolant which in turn causes overheating and a blown head gasket. The problem exists with most 2000 to 2003 vehicles equipped with the 3.8 Liter V6. There were defects in the upper intake manifold gasket, throttle body nuts, and the throttle body gasket.
Head gaskets seal the clyinder head to the block. Head gaskets usually blow when the vehicle has been run too hot for too long. Heat warps the cylinder head and gasket quits sealing, known as a blown head gasket. There are other reason for blowing a head gasket, but this one of the most common reasons.
have you had the head gaskets replaced you might have blown head gaskets or warped heads on the block this is a costly repair check your water for oil or check your oil for water this will help to determin if they are ... have you had the head gaskets replaced you might have blown head gaskets or warped heads on the block this is a costly repair check your water for oil or check your oil for water this will help to determin if they are ...
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