My chirpy exhaust... - Ford Powerstroke Diesel Forum
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Old 04-16-2013, 09:33 PM
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My chirpy exhaust...

....that tensioner-bearing that I thought needed replacing? As it turns out, it isn't the tensioner....it's the exhaust!
Since upgrading to the 3" DP, it seems that my exhaust has become a bit "chirpy". The noise is definitely coming from the exhaust system...just a bit forward of the transmission and at start-up (when the engine is cold) has a bit of a "ring" to it.
Is this normal....could it just be the exhaust resonating in the pipe? It is a DIAMOND EYE, so it isn't "cheap" although I got the aluminized one instead of the stainless version.

Anyone else experience anything like this?
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Old 04-17-2013, 09:19 AM
Hee Hee, he's doing it...
 

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My truck on first fire of the day idles rough for a minute or two and then smooths out. With a face shield on have someone start the truck while you are under it looking up at the downpipe where it bends around the firewall to see if it's rubbing on the pinchweld. If it's not coming from there loosen the V-Band clamp where the pipe meets the turbine housing (More like the EBPV adaptor) and separate the pipe from the adaptor. Does it look like the downpipe is slightly twisting on the adapter? If so a new V-Band clamp _might_ help but if not you may need to loosen the whole downpipe and see if it will settle into a better position. Tighten back up and see if the squeak goes away.
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Old 04-17-2013, 07:56 PM
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Spent a few minutes underneath tonight, after starting it for the first time today...and there is NOTHING rubbing, touching or impinging on anything else.

Funny thing too...it starts out "normal" and then starts ringing after a few minutes and the ringing is coming directly from the pipe. Hard to pinpoint exactly where, but it is definitely emanating from the exhaust system AFTER the DP.

Weird....
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Old 04-17-2013, 08:03 PM
Hee Hee, he's doing it...
 

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So you think you hear it after the down pipe? Do you still have the stock Cat and muffler? Unbolt the cat from the rest of the exhaust and start again. If the sound goes away then it's in the loose pipe. If it continues then its in the cat.

Last edited by BigFuel; 04-17-2013 at 08:13 PM.
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