Exhaust Leaks

Discussion in 'General Harley Davidson Topic' started by Scrounger, Jun 22, 2010.

  1. Scrounger

    Scrounger Active Member

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    May be a simple question, but how do you know if you have an exhaust leak? Can you feel it. Hear it. Smell it. Was wondering about the gaskets off the head.
     
  2. cdn-bigfoot

    cdn-bigfoot Junior Member

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    You'll get a lot of backfiring under hard decel. Eventually getting worse to include a jerky ride at low rpm's in 1st gear. You may even see some black scorching on the pipes, clamps or head.
     
  3. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Check this:

    Muffler Leaks - Harley Davidson Community

    TQ
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    Listen for a ticking sound, or if you are brave use a welding glove and plug up the pipes one at a time and listen close:s
     
  5. Gus the Rat

    Gus the Rat Member

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    would the old trick of using a long screwdriver and putting one end on where you suspect the leak and your ear on the handle work on this? i know it works when trying to find out if your alt./water pump/P.S. pump/main berring is going out....not sure if it works with exhaust leaks (might make a different tone on the screwdriver...)
     
  6. cdn-bigfoot

    cdn-bigfoot Junior Member

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    No

    In the other instances you're listening for a different vibration that doesn't belong. In this instance it is an escape of exhaust and the resulting reduced back-pressure. I doubt there would be a harmonic difference.:guitar
     
  7. so cal hoss

    so cal hoss Member

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    I've used the smoke from a cigarette to detect exhaust leaks. Hold the cigarette close or blow some smoke around the clamp area while raising the RPMs.
     
  8. Gus the Rat

    Gus the Rat Member

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    ah...a much better idea...and if you dont smoke - bow hunters use ground wood ash in an empty visine bottle to check wind direction....i guess baby powder could work too.
     
  9. Scrounger

    Scrounger Active Member

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    Good excuse to go buy a good cigar I guess.
     
  10. cowboywildbill

    cowboywildbill Active Member

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    Isn't that second hand smoke bad for your bike? LOL:bigsmiley30: