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-   -   3.7 spark plug maint (http://www.jeepgarage.org/f189/3-7-spark-plug-maint-60593.html)

SLSILBERT 05-27-2013 06:18 PM

3.7 spark plug maint
 
I have a 2010 liberty limited was told i should change the coil packs when changing the spark plugs at 30k any one have any info or comments

hummer recovery team 05-27-2013 07:00 PM

Only change coils if there bad.

Eicas 06-02-2013 01:28 PM

Re: 3.7 spark plug maint
 
Don't forget to check the plug gap before installing, - new ones can be off quite a bit, - at least mine were!


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