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Old 12-29-2008 | 01:56 AM
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buck1856
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From: Superior, AZ
Default RE: spark plug compression leak

What kind of engine do you have and what kind of plug are you using.Did you buy it used?Are you using a 5/8 peanut plug with a taper seat in a standard plug with a flat gasket.If its the flat gasket type is the plug gasket even there?
Are you sure the plug isnt cracked?