Question about Harley Davidson FXSTD Softail Duece Motorcycles

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I have a 1989 HD Softail Custom FXSTC. Everytime I get out on the rode riding, it backfires and coughs back through the carburetor. It seems to do thiis when I hit a bump. I don't know if it is electrical, fuel or if I have a burnt valve. I am planning a trip in a few days and I would like to know if anyone can help me or tell me what to check. Thanks.

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Dheck valve clearence. then tyming

Posted on Sep 13, 2010

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