How to Determine if the Cylinder Head Gasket is Blown?

1 Answers
McPaul
07/29/25 4:51pm
Here are the symptoms of a blown cylinder head gasket: 1. The coolant temperature gauge suddenly shows an abnormally high reading during engine operation. 2. Coolant overflows or bubbles emerge from the expansion tank when abruptly pressing the accelerator pedal. 3. Oil and coolant stains appear at the junction between the engine block and cylinder head. 4. A high-pressure gas ejection sound can be heard from the engine compartment during operation. 5. Oil stains floating on the coolant surface can be observed in the expansion tank. 6. Noticeable power loss occurs during engine startup, accompanied by significantly reduced RPM and black smoke emission.
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