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Compression Question

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Old 07-01-2004, 12:16 PM
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Compression Question

How can a car have 0 compression in a cylinder, but have enough pressure to blow off a spark plug wire without the plug inside?

Supposidly I have 0 compression, but you can't put your hand over the hole without it blowing it away.
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Old 07-01-2004, 12:30 PM
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broken compression tester?
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Old 07-01-2004, 01:09 PM
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Originally Posted by MrGone
broken compression tester?

That''s what I'm guessing, because in order for that to happen there has to be compression right?
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Old 07-01-2004, 01:41 PM
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yeap

Even if you didn't have any rings on the piston, at the speed of just cranking it would still blow out a good poof of air at you through the spark plug hole
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