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Old Feb 2, 2008 | 12:24 PM
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snt390
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Spark Plug Question?
Hey guys new here so first off hello to everyone. I recently pulled the plugs on my 390 and they were covered in a light brown almost tan dust is this normal. Ive seen some tan on the plugs before but not covered. Thanks in advance for all responses.
 
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Old Feb 2, 2008 | 12:37 PM
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merlynr
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According to my Chilton book, it is caused by antiknock additive in gasoline. They can be cleaned and reused. The pic and description is "reddish deposit".
 
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