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    3. Does the discoloration on exhaust pipes on HD from bad fuel/air mixture harm the valves or motor?
    Does the discoloration on exhaust pipes on HD from bad fuel/air mixture harm the valves or motor?

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    0  Views: 284 Answers: 2 Posted: 13 years ago
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      2 Answers

      See here what causes it and how to prevent it > http://www.ehow.com/how_7496712_prevent-harley-motorcycle-exhaust-pipes.html

      11 years ago. Rating: 1
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        when I owned a Harley. (FXE)  It had 2 into 1 chrome collector pipes, they discolored at the flange two days after install, I was told its no problem. Means its hot there. Bluish tint to the chrome. Maybe I was wrong, but I never had a valve problem.

        11 years ago. Rating: 1
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