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214 Posts
you may want to double check the plugs with autolite - the plugs you put in are different than the ones their catalog recommends. Autolite doesnt publish too much information on the definition of their part#s, but the biggest difference i can see is the heat range. I'd call Autolites tech to make sure the plugs you're running aren't contributing to the rough idling - 800-890-2075, option#2,2,0
