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  #1  
Old 09-06-2007, 03:06 PM
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EdGlide EdGlide is offline
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Default Bad Exhaust/Header Gasket:

Would a bad exhaust/header gasket cause the following symptoms?
[ul][*]Popping on decel[*]Rough/excessive vibration on accel[*]Feels like not enough bottom end[*]Exessive heat[*]Exhaust sound louder than normal[/ul]
Let me know.
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Old 09-06-2007, 03:25 PM
Dr.Hess Dr.Hess is offline
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Default RE: Bad Exhaust/Header Gasket:

Yeah, it could certainly contribute to those problems, as well as the valve guide dropping out of the head. Ask me how I know.

You can check it by having the bike running and CAREFULLY putting your hand down there around the exhaust and feeling for hot exhaust coming out, without touching the metal bits. Best to do it when the bike is cold. You also might try blowing some smoke in that area and seeing if it gets blown away from the exhaust. This is not to be construed as a recommendation to smoke.
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Old 09-06-2007, 03:36 PM
Geezer Glide Bob Geezer Glide Bob is offline
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Default RE: Bad Exhaust/Header Gasket:

I have only heard of doing this.

Take a deoderant spray (Ban brand, something white when it sprays)

Spray in on the bike in the area that you think you might have a leak.

Start the bike and let it run a little the area will turn BLACK where there is a leak

Just spray wash off the the rest of the white deoderant, comes off easy!!!
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Old 09-06-2007, 03:37 PM
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Default RE: Bad Exhaust/Header Gasket:

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ORIGINAL: Dr.Hess

Yeah, it could certainly contribute to those problems, as well as the valve guide dropping out of the head. Ask me how I know.

You can check it by having the bike running and CAREFULLY putting your hand down there around the exhaust and feeling for hot exhaust coming out, without touching the metal bits. Best to do it when the bike is cold. You also might try blowing some smoke in that area and seeing if it gets blown away from the exhaust. This is not to be construed as a recommendation to smoke.
I guess I ought to act quickly when i'm testing for it... the engine tends to warm-up quick, especially here in FL
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Old 09-07-2007, 11:05 AM
Dr.Hess Dr.Hess is offline
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Default RE: Bad Exhaust/Header Gasket:

Well, it shouldn't take much time to feel the pulses if it is a significant leak. They tend to warm up quickely everywhere. I dunno about causing the vibration, though. More likely the vibration caused the exhaust leak. You might want to look to other causes for that.
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Old 09-07-2007, 11:05 AM
 
 
 
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1986, bad, davidson, exhaust, gasket, gaskets, harley, head, header, headers, leak, motorcycle, signs, symptoms, test


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