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Old 07-31-2014, 01:48 AM   #9
Nin92
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Join Date: Jan 2012
Location: Pensacola Florida
Posts: 94
Re: BIZARRE Spark Plug Color?
Looks like high speed glazing. Happens when cylinder temperature increases rapidly under heavy acceleration. Causes the deposits to melt and form a hard coating. What heat range are your current plugs?
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