Backfire issue when starting

Discussion in 'General Harley Davidson Topic' started by Trapshooter, Oct 30, 2011.

  1. Trapshooter

    Trapshooter Member

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    My wife has a 2007 Heritage Softail and about everyother time she starts it it backfires thru the air cleaner. This bike has had the air cleaner opened up and does have a V&H fuel pack installed. I talked to them to see if there was something going on with the settings and they said "no". It also makes a terrible cluking noise when she starts it.

    Any ideas what could be wrong?
     
  2. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

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    Does it run alright otherwise? Does it run hot? Any coughing after the start? Any other issues may help in the diagnosis.
     
  3. Trapshooter

    Trapshooter Member

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    It runs just fine after it starts and is not running hot. But, I'm not the one on it either but when I asked her about it she said it is not hot like my bike was before the EJK was installed. So, I'm sayin no.
     
  4. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

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    I'm thinking an exhaust leak first then the settings. When the exhaust is cold it would tend to leak more than hot because of expansion. Start it and take a rag or glove and cover the exhaust momentarily and see if you hear leaks upstream. If not, I'm going with a lean setting.
    Also check the intake for leaks with wd40 or carb cleaner while its running.
     
  5. HarryB737

    HarryB737 Junior Member

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    It also makes a terrible cluking noise when she starts it. (Quote)

    That is the original equiptment Compensator... Consider the SE upgrade.
     
  6. Trapshooter

    Trapshooter Member

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    Good point about the exhaust leak. The PO had the exhaust off before we bought it. Took off the V&H pipes and put the stock set up back on. If I was a betting man.....

    Thanks, I will check it out and let you all know.
     
  7. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

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    Sometimes those gaskets at the head can be tricky and dont seat right. Even the joints can come loose, so check it over good.
     
  8. Trapshooter

    Trapshooter Member

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    Well, I checked it over pretty good. No exhaust leak that I can find. Checked the intake with WD-40, nothing. I think the best thing may be to repalce the gaskets you speak of and see what happens. Sure can't hurt anything I guess.
     
  9. Trapshooter

    Trapshooter Member

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    Well that didn't help. Still backfire part of the time. Would the compensater possibility be the Issue?
     
  10. Jack Klarich

    Jack Klarich Expert Member

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    The comp sprocket is the bang on start up, I don't see it causing a back fire out the AC If u get it figured out I sure would like to know what it is, best of luck:s