Re: How to change the spark plugs on a 4.7 V8 WK Grand Cherokee or Commander
Just changed my plugs again used the factory champs and the engine is smooth. just hit almost 90,000 the other plugs that came out had a reddish tint to them all of them did and after some research its from fuel additives.
06 XK 4.7, Lots of Mods.
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