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jtsull 01-05-2014 12:51 PM

2012 GC Hemi Spark Plug Change
After waiting until 42,000 to change out my spark plugs, the photo of one of the plugs tells a story that the 32,000 OEM interval means something.
Swaped them out with same Mopar NGK plugs. Thank you to member SixZeroFour for an excellent guide.
Thought I would share my findings. This is the worst plug. Most were cleaner but at least 4 of them looked like this.

The Evil Twin 01-05-2014 09:42 PM

Re: 2012 GC Hemi Spark Plug Change
8 Attachment(s)
That actually doesn't look that bad. Nominal wear of the electrode. Color looks decent and there aren't many deposits. Not sure how much the gap grew but that matters little. I would expect that 4 of your plugs are significantly different since those cylinders shut down at times. Then again, it depends on how often you travel highway.
Regardless, I would stick to the 32k.

jtsull 01-06-2014 07:40 AM

Re: 2012 GC Hemi Spark Plug Change
Makes Sense. I do a lot of highway travel.

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