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2015 Equinox LT 2.4L AWD / 2009 Torrent GT 3.4L AWD
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Discussion Starter · #1 · (Edited)
I appreciate someone can educate me why the carbon buildup on the spark plugs are not the same. The one in cylinder 1 is the worst and the 4th one is relatively cleaner. Thanks.

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2015 Equinox LT 2.4L AWD / 2009 Torrent GT 3.4L AWD
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256 Posts
Discussion Starter · #3 ·
On the 3.6, i believe the number 6 is always the dirtiest.... if im not mistaken, its the plug closest to the pcv valve on the valve cover... the pcv tends to clog up the little breather holes....
Is there a pcv near your dirtiest plug?
Thanks RBarrios. Yeah, cylinder 1 is directly above the PVC on the 2.4L and to the left are the VVT solenoids.
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2015 Equinox LT 2.4L AWD / 2009 Torrent GT 3.4L AWD
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256 Posts
Discussion Starter · #5 ·
@Ebeo1 , your plugs are the same as mine that some are more dirty comparing to others. Thanks for sharing.
 
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