2002 Jeep Grand Cherokee 4.7L Spark Plug Replacement
Replaced the spark plugs on my 2002 Jeep WJ 4.7L V8 at 200k miles. The old plugs (Bosch Platinum) were installed at 100k miles. The factory service manual (and the general Jeep community) recommends Champion copper core on the standard 4.7L engine ... I ran platinums for 100k miles and had no problems, but this time went back to FSM recommendation. I offer this video as an unprofessional guide that might help somebody else out there. There may be better ways to do these things, this is how I did it. Good luck, do not blame me if you muck it up.
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