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Re: AC Delco Rapidfire Platinums - Regap??
I'm not sure about the gap issue but I was told not to re-gap a platinum plug because you run the risk of cracking the platinum coating which can cause the plugs to wear out sooner and/or cause the plugs to become fouled. As for all of the plugs that I have purchased for my GAGT and the Montana I had, I was not to re-gap.
Hope this helps.
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