Had up-pipes replaced.....still get whistle noise - Ford Powerstroke Diesel Forum
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Old 02-13-2014, 03:33 PM
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Had up-pipes replaced.....still get whistle noise

So I spent the money to have my cab removed to have my up-pipes replaced because of a recent whistle noise at certain throttle ranges. Now my stock up-pipes did in fact have a leak....I saw it......but replacing them did not fix the whistle. What do I look at next? Turbos? Exhaust manifolds? Im bummed and running my credit card raw. Other than the noise, the truck runs great.
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Old 02-13-2014, 04:49 PM
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Quote:
Originally Posted by sanman28 View Post
So I spent the money to have my cab removed to have my up-pipes replaced because of a recent whistle noise at certain throttle ranges. Now my stock up-pipes did in fact have a leak....I saw it......but replacing them did not fix the whistle. What do I look at next? Turbos? Exhaust manifolds? Im bummed and running my credit card raw. Other than the noise, the truck runs great.
Well did they tell you the pipes were leaking or did you tell them to replace them?

If they said they needed to be replaced and there's still a noise they shouldn't of returned the truck to you as at the dealership as this would of failed QT.

Also they could of left a bolt loose or broke a bolt from manifold or up-pipe or even turbos.

Call service manager and ask if they did a QT on your vehicle.

Also give them a chance to resolve the issue and ask them to approve any charges.

If not leaking could just be loose turbo boot.

I had my bed pan replaced and was in shock seeing my truck all taken apart. View my albums. I was lime holy cow hooves.. Lol..

Relax as you are not at least having engine codes..

Also check for black marks around all the silver insulation on the cab that behide the turbos for leaks.

Have someone rev the motor a little and you look around for the hiss.

Keep us posted
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Old 02-13-2014, 05:12 PM
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Yup. Said uppipes were cause if noise. I have the old ones they took out and i can see soot from a leak. Obviously, they too were failed......only werent making a noise i could hear.
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Old 02-14-2014, 06:18 AM
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Quote:
Originally Posted by GSchretter View Post
Well did they tell you the pipes were leaking or did you tell them to replace them?

If they said they needed to be replaced and there's still a noise they shouldn't of returned the truck to you as at the dealership as this would of failed QT.

Also they could of left a bolt loose or broke a bolt from manifold or up-pipe or even turbos.

Call service manager and ask if they did a QT on your vehicle.

Also give them a chance to resolve the issue and ask them to approve any charges.

If not leaking could just be loose turbo boot.

I had my bed pan replaced and was in shock seeing my truck all taken apart. View my albums. I was lime holy cow hooves.. Lol..

Relax as you are not at least having engine codes..

Also check for black marks around all the silver insulation on the cab that behide the turbos for leaks.

Have someone rev the motor a little and you look around for the hiss.

Keep us posted
This is common and possibly the reason. When I did 6.0 manifolds one of my manifold bolts had broken off.
GSchretter likes this.
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Old 02-14-2014, 07:01 AM
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Originally Posted by 04hdfatboy View Post
This is common and possibly the reason. When I did 6.0 manifolds one of my manifold bolts had broken off.

Crap.....and i already did the new 6.4 pipes. So new manifold bolts and gaskets should be the next attempt.

Last edited by sanman28; 02-14-2014 at 07:12 AM.
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Old 02-14-2014, 07:41 AM
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Originally Posted by sanman28 View Post
Crap.....and i already did the new 6.4 pipes. So new manifold bolts and gaskets should be the next attempt.
I would make sure before you pull the cab again but broken manifold bolts are fairly common. As GSchretter said check the intercooler boots also and see if you can power brake to see where the whistle is coming from.
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Old 02-14-2014, 02:35 PM
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So assuming I do have an exhaust manifold issue, regardless of if I go with 6.0 or 6.4 manifolds, do i need to switch to a ARP stud to hold them on?

Last edited by sanman28; 02-15-2014 at 05:49 AM.
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Old 02-17-2014, 06:13 AM
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Originally Posted by sanman28 View Post
So assuming I do have an exhaust manifold issue, regardless of if I go with 6.0 or 6.4 manifolds, do i need to switch to a ARP stud to hold them on?
No I didn't use arp studs. If you go with 6.0 manifolds you need the 6.0 manifold bolts and spacers tho.
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Old 02-24-2014, 06:19 PM
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Truck went back for cab to come back off courtesy of the dealer. Exhaust manifolds were gtg. Leak came from a crack in the catalyst pipe. All fixed now and running strong with no whistle.
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Old 05-06-2014, 08:08 AM
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Which is the catalyst pipe? There are three pipes that have the braiding, is that one of those three?
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