Question about Harley Davidson FXSTB Night Train Motorcycles

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When cold, engin starts and back-fires some times. exhaust is running cherry red when at idle. Smokes black when first ran.

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  • t_rooter Jan 01, 2011

    the back cylinder running hotter than front. its a 96 ci. on a 09 night train.

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It sounds like it is getting too much fuel and is burning when it leaves the pistons. Do both exhausts glow or just the fron one?
Is the ignition timing within spec.?
Without model it could be anything from exhaust valve stuck open to injector problems.
Ride safe.

Posted on Dec 31, 2010

  • specialistel Jan 02, 2011

    Nice bike!
    The rear runs hotter than the front normally as the rear is heated up by the front due to them being inline. Buell got over the problem by using a blower on the rear barrel.
    I have a mate of mine who runs a Harley workshop on the south coast, he is back at work Tuesday. I shall give him a call but I reckon finned exhaust clamps will do the trick. I wouldn't like to de-tune it just for that!
    Regards and I'll get back to you when I get a result.

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