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Old 03-26-2012, 03:24 PM
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2door 2door is offline
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Join Date: Sep 2008
Location: Littleton, Colorado
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Default Re: Spark Plug Popped Out!

Typically on a cast iron or aluminum head I don't either but the aluminum/threads used on the HT can be questionable. I'm just being overly cautious maybe...but it can't hurt.
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