Spark Plug Color

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May 30, 2008 | 2:09 PM

Natidonkryda

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Spark Plug Color

So I pulled the spark plugs to check em and they are half brownish gray and half white!! One side of the plug hasnt even been touched or sparked. What causes this? Car runs fine.

May 30, 2008 | 9:58 PM

old dog

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RE: Spark Plug Color

the one's that are white are running leen

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