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to do, and tell you so much about your engine. You don't even have to have a running engine to do the test, you just have to be able to remove the plugs and rotate the crank. I guess the biggest issue is that you need a compressed air source. But, it's very informative to do the test and be able to tell where the leak is, not just that you have a leak, which is pretty much all a compression test will tell you.
Mike ------------------------------------------------------
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