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Just wondering what the general consensus out there for the amount of times the vehicle turns over during a compression test? I have heard anywhere from 5-8, and personally crank 7. What is the desired number of revolutions to ensure an accurate reading?

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up vote 4 down vote accepted

I do it until the gauge doesn't go up anymore. I am not aware of a specific number of times that it needs to be done. That usually takes 6 or 7 times, but I have never actually counted.

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That's pretty much what I've been taught to do, too. – Timo Geusch Aug 11 '11 at 23:38

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