Posts: 1747
Location: Mt. Zion, IL | short STRIKE - 2/1/2012 3:13 PM
As long as a truck thread was started, can someone answer this for me... Why does the Jeep Grand Cherokee with the 5.7L Hemi have 16 spark plugs? benefits? I am not a car guy, but I change the oil, brakes, and rotate the tires, well Fiat (Chrysler/Jeep) recommends the plugs get changed every 30,000, I figure what the hell, a few tall boys in the garage and no problems... It took me 3 hours on Sat. some of those bad boys are near impossible for my sausage fingers to get to... anybody enlighten me as to why? Thanks
Emissions and mileage. Two plugs that fire a short time apart give a more complete burn. Plugs are copper, because of fouling. Replacement plugs must be copper as well unless you want to replace the coil packs at the next oil change. The platinum plugs that "fit" are a hotter plug which requires more voltage from the coil packs. You WILL overheat the packs and fry them if you run platinum plugs in a Hemi.
My father is a mechanic and I work with about 20 of them. Buy the spark plug socket with a universal joint built into it and locking extensions. Flex head ratchet that is fine tooth and these tools will mean job done in an hour. I did a set just this week on a 2010 hemi ram in about an hour. |
