What are the symptoms of a blown head gasket in a car?

1 Answers
VonFernando
07/29/25 12:45pm
Car blown head gasket symptoms include: A blown head gasket refers to the rupture of the gasket between the cylinder head and the cylinder block, also known as head gasket burn-out. The car may exhibit symptoms such as insufficient engine power, weak driving performance, bubbling or boiling in the radiator, white or blue smoke from the exhaust, and abnormal noises. Causes of head gasket burn-out: 1. The engine operating under high load for extended periods, frequently experiencing detonation combustion, leading to localized high temperature and pressure in the cylinder, which burns out the head gasket; 2. Improper tightening of cylinder head bolts, not following the specified torque requirements, resulting in uneven torque and causing the head gasket to not sit flat between the cylinder block and cylinder head, leading to gas leakage; 3. Excessive ignition advance angle or fuel injection advance angle, causing excessively high peak cycle pressure and temperature; 4. Poor quality head gasket, uneven thickness, air bubbles in the sealing edge, uneven asbestos distribution, or loose edges.
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