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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > Technical Discussion and Customizing your H3

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Old 08-30-2006, 05:41 PM
aetherH3 aetherH3 is offline
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Default Why is there soot on my muffler???

I was under my truck the other day taking off my side steps and noticed that there is black soot running straight down the middle of my muffler (the one under the middle of the car), then there is more soot on the driver's side of the rear muffler along the seam... almost looks like there may be a leak or something. Can anyone else check to see if they have this? I'll try to get a pic a little later.
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Old 08-30-2006, 09:33 PM
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H3slate H3slate is offline
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Default Re: Why is there soot on my muffler???

I noticed the same thing on mine when I was adjusting the torsion bars. Not sure that it is a problem though.
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Old 08-30-2006, 11:57 PM
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Default Re: Why is there soot on my muffler???

Quote:
Originally Posted by aetherH3
I was under my truck the other day taking off my side steps and noticed that there is black soot running straight down the middle of my muffler (the one under the middle of the car), then there is more soot on the driver's side of the rear muffler along the seam... almost looks like there may be a leak or something. Can anyone else check to see if they have this? I'll try to get a pic a little later.


There is a weep hole in the resonator (front muffler) and in the (rear) muffler to alow water to drain out due to condensation buildup. If holes were not there water would stay in them and promote rust buildup. The soot look is just carbin mixed in the water then dried to the outside case.
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Old 08-31-2006, 02:41 AM
DURAMAX TIM DURAMAX TIM is offline
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Default Re: Why is there soot on my muffler???

thought maybe they where following my truck a little toooooooo close.
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