Copper is fine, they just don't last very long. Maybe 15,000 miles or so.
Originally Posted by Fivefingerdeathpunch Copper is fine, they just don't last very long. Maybe 15,000 miles or so. Ok well I think im going to go change these plugs for autolites see if that helps if not ill do the iridiums and also check if I didnt unplug a wire or a vacuum line.
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