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Evaluate my Spark Plugs

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Old Aug 2, 2018 | 11:33 AM
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Default Evaluate my Spark Plugs

About 8 track days and 2,000 street miles. After mild cam install... everything else stock including exhaust manifolds. Running E32.

#1 in the top left corner


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Old Aug 2, 2018 | 01:42 PM
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From: Frederick Colorado
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They look fine.
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Old Aug 2, 2018 | 02:00 PM
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Thanks, I basically think so too. But a little uneven and 110k mile injectors are at 95% in the top end... thinking this could be cause. Also #2 looks the worst with some white crud on the ground strap. #2 older plugs had some center electrode material removed, so thinking potentially some light detonation.
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Old Aug 2, 2018 | 02:08 PM
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From: Frederick Colorado
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A couple look the tiniest bit lean. Some of the white Ash may be fuel additives burning off in the high temperatures, but this is to be expected with the 8 track days.
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