Quote:
Originally Posted by Rob1
i did it cold and dry and i did that to see if i blew my head gasket then this started.
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The reason for doing it warm is so that the rings will expand and valves will have a more true seating... that way compression escaping past the rings isn't mistaken for bad rings. The wet test (done with the right amount of oil) will only ensure that even less air escapes past the rings; The two (wet and dry) are used to determine the health of the rings. Also, keep in mind that if the air can escape past the rings too easily it'll never get pressed past a small leak in a HG... no good for diagnosis at all in that case.