Question about 2007 Jeep Grand Cherokee Overland

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How often do you need to change the spark plugs?

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Anonymous

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Newer vehicles, including yours are made with 100K plugs. This means unless you have issues with them they dont require replacing before you exceed 100K miles on the vehicle. If you are having issues with the performance of the engine such as sputtering that leads you to believe its the plugs then after a thorough diagnosis, if you decide to replace them be sure and utilize quality plugs and gap them properly. If you get "specialty" plugs like T3 or tri-tips, etc make sure you get them for your vehicle as they come factory gapped and ready for installation. ALso be sure and replace all plugs at same time.. dont mix and match. Inspect your wires for cracking or glazing as well.

Posted on Jun 30, 2010

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rich2481

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100K miles on the new cars, but hey Plugs are cheap, I change mine at 50K

Posted on Jun 30, 2010

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