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Re: Possible result from pre-ignition
Posted to Technical Discussion Forum on 1/3/2020 3 Replies

Those are some tired looking plugs. If plugs have painted tips, they are original factory most likely. I still see them occasionally at well over 200K miles. (If it isn't broke, don't fix it). Plugs are seldom replaced these days unless a customer requests, or... Login to read more.

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