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Symptoms of blown head gasket?

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Old 09-09-2005, 09:03 AM
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Soaring
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Default RE: Symptoms of blown head gasket?

It depends on where it is cracked, but yes it has similar symptoms. Here are the symptoms of a blown gasket. There are any number of things that'll happen when your blow a head gasket.

Common symptoms:
Foaming, bubbling, or "gargling" in the radiator.
Rapid pressure buildup in your cooling system, before the engine has warmed up.
You may even get coolant overflowing from the reservoir bottle because of the pressure.

All these above mentioned symptoms could also be a cracked head. Either way, the head must come off, the gasket replaced, and the head inspected for cracks. At the same time, check both mating surfaces for flatness before putting on a new gasket so you don't have to repeat the job.

Other symptoms of a blown head gasket include:
White smoke coming from the tailpipe, sometimes intermittently.
Water in the oil. When they mix, the oil gets a chocolate milkshake appearance.
Oil in the coolant.
Cylinder pressure low when a compression test is done.
Cooling system will not hold pressure when statically pressurized.

Look for any combination of these symptoms to diagnose a bad head gasket.



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