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Old 09-08-2013, 08:27 PM   #1
11syn3rgy
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Drives: 2011 Camaro RS/2SS (L99) Synergy
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LS9 spark plugs

I just pulled one of my spark plugs earlier tonight and although I'm far from an expert, these sure look like I'm running lean? Just curious if the typical "light tan" color applies to the LS9 plug in a forced induction application? This plug is white. Is the whole tip of the plug supposed to be light tan or just the underside where the spark occurs?

Any advice would be great. Thanks guys!
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Old 09-10-2013, 07:36 PM   #2
dan0617
 
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If shut down at WOT to do a plug read, white means lean. Don't look for that heavy tan of the days of old. Slight tan, mostly clean, black up in the crevices. Look up some pics of plug reading by an Internet search, just remember ours will be cleaner than the carb setups. Also fuel and fuel additives change the coloring.
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Old 09-10-2013, 07:38 PM   #3
11syn3rgy
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Got it, thanks!
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