Intermittent leak between turbo housing and up pipe(s) - Ford Powerstroke Diesel Forum
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Old 01-26-2011, 01:42 PM
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Intermittent leak between turbo housing and up pipe(s)

Just got this engine installed in the truck and we have a issue with it blowing exhaust out between the turbo flange and where the up pipe(s) clamp to it. We cant figure it out, we have had the turbo off twice and even replaced the up pipes themselves from another truck and still no different. It all appears to be fitting correctly and we even used a new band clamp to make sure that wasnt a problem.
While its idling it will be normal without leaks then start blowing by then back to no leaks. Under throttle while driving it its constant and increases in severity depending on how much throttle you give it. There are no codes thrown on the scanner and when we used the scanner to runs a diagnostics it would also make the leak stop and start depending on what it was doing but again no codes were thrown.
Any help would be appreciated guys! Thanks
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Old 01-26-2011, 02:06 PM
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I'm new to the 6.0's so I'm going out on a whim but it sounds like you have something going on with the turbo itself. Could also be a cold air charge boot leaking?
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Old 01-26-2011, 03:39 PM
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UPDATE
I stopped the leak between the up pipe and the turbo by overtightening the vclamp, however now it is forcing it to leak between the passenger up pipe and the egr cooler flange.
Also when i unplug the turbo (solenoid) it quits leaking alltogether. One other problem with the truck (unrelated i think) is that after the truck is turned off the injectors keep cycling for about 10 seconds. Any thoughts? I appreciate the input guys! Thanks
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Old 01-26-2011, 04:30 PM
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Most likely the up pipe is not fully seated in the turbo. Loosen the bolts on the manifold/up pipe and then try to seat the up pipe in the turbo, it will "click" in. After that re-tighten everything.

The buzzing is part of the FICM strategy, it's normal. Do you know what your strategy is? You'll need a scan tool or edge insight type monitor to find it.
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Old 01-26-2011, 04:49 PM
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Quote:
Originally Posted by Gramps10 View Post
Most likely the up pipe is not fully seated in the turbo. Loosen the bolts on the manifold/up pipe and then try to seat the up pipe in the turbo, it will "click" in. After that re-tighten everything.

The buzzing is part of the FICM strategy, it's normal. Do you know what your strategy is? You'll need a scan tool or edge insight type monitor to find it.
Well i got the leak fixed between the housing and the up pipe but now its frcing its way out between the passenger side up pipe and the egr cooler flange. Its like no matter what i do its going to force its way out of the weakest seal?
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Old 01-26-2011, 05:01 PM
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I would suggest to basically start over. Loosen everything, start at the turbo and work back. The up-pipe has to be fully seated in the turbo or it will force other junctions out of alignment.
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Old 01-26-2011, 05:13 PM
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Well normally i would agree with you. But its a problem of over pressuring. Something it causing it to have way to much back(back) pressure and is forcing a leak. Everything is tight and correct now as far as all the connections go.
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