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-   -   Hissing noise proflo exhaust (http://www.hdtruckforum.com/showthread.php?t=435)

Crocmania 12-20-2012 01:36 AM

Hissing noise proflo exhaust
 
Is there anyway of stopping the hissing sound on a duramax at idle so it just has the nice v8 burble

UTAHFORD 12-20-2012 05:53 PM

is it your turbo??? thats the only hissing i know of man

Crocmania 12-20-2012 09:51 PM

I thought it was the turbo but its a very loud hiss it stops for about ten seconds every now and then at idle. It almost sounds like an exhaust brake is stuck on

UTAHFORD 12-28-2012 12:14 AM

hmmmm i really dont know man that is weird

riyarobin 12-15-2013 11:14 PM

Hissing sound indicates a crack in the exhaust manifold, exhaust pipe or a leaking gasket. A chugging noise could mean a blockage in the exhaust system.


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