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Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
Replaced plugs today, ran terrible for the first few startups then evened out and runs great now! I don’t know if it was the computer correcting for the new plugs or what, but my question is the old plugs. It appears like metallic shavings all over the threads. I’m no pro but it can’t be a good sign...rings maybe??
09-03-2018, 06:56 PM
Spark Plug replacement, old plugs look....
thanks again lol
