Head gasket Q

Quote:

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Originally Posted by sheerluck

A healthy petrol engine can compress it's exhaust gases up to about 180psi.

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If your petrol engine is compressing it's exhaust gas to 180psi, it is anything but healthy. I would suspect the exhaust valves are not opening.
Aaron

Quote:

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Originally Posted by Aaron IIA

If your petrol engine is compressing it's exhaust gas to 180psi, it is anything but healthy. I would suspect the exhaust valves are not opening.
Aaron

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Yeah, I don't know why I put exhaust in there. Just "compress" would be correct.