Karco

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About Karco

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    TT Newbie

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    Georgia
  1. I just purchased a used 04 CRF 450 with very little use. It seems to pop/backfire more than I think is normal. Also the header glows bright red for about the first 8 inches from the head. I'm guesing I need to change the needle valve setting but don't know which way to go with it. Any help would be great.