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What are the symptoms of a blown head gasket?

Model: (Various brands) Various
Part: Cylinder head

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This video outlines the main signs of a blown head gasket; a serious issue that can irreparably damage your engine if not addressed immediately. The most common symptoms are engine overheating and the temperature warning light illuminated, or a loss of engine power; white smoke from the exhaust is the classic symptom of a blown head gasket, but if you check the levels and find that the engine oil is frothy, or has formed a sort of "mayonnaise" on the cap, and you see that the oil has come into contact with the coolant.

Another symptom is a drop in oil level, or radiator fluid level, or dirty spark plugs. In most cases, all these symptoms manifest at the same time.


Updated on 21 October 2026 by ScegliAuto


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