What causes a small car's cylinder head gasket to fail?

1 Answers
StViolet
07/30/25 12:04am
Small car cylinder head gasket failure may be caused by engine overheating, poor gasket quality, and other factors. Engine overheating: This occurs when the engine overheats due to reasons such as running dry without coolant, electric fan failure, or radiator blockage leading to coolant boiling. Poor gasket quality: This includes inferior gasket material with uneven thickness, air pockets in the sealing edges, uneven asbestos distribution, or loose edge wrapping. Bolt tightening issues: Improper tightening of cylinder head bolts without following specified procedures, resulting in uneven torque that prevents the gasket from sealing flat between the cylinder block and head, causing gas leakage.
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