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Author Topic:   Plug Reading
WesternAuto17
Member
posted May 29, 2002 08:49 AM
Reading Spark Plugs - what am I looking for? I have an idea but would like your opinions.

Thanks

techmaster35
Member
posted May 29, 2002 09:17 PM
dark black is rich and whitish gray is lean light brown is what i think is optimum color but some people beg to differ


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