STC fitting and EGR Delete - Ford Powerstroke Diesel Forum

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post #1 of 6 Old 10-19-2010, 09:04 AM Thread Starter
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STC fitting and EGR Delete

So over the week i've been doing an STC fitting replacement and Egr Delete Kit. Well the STC replacement went good as the truck starts no matter what the temperature is, but now i have formed a new problem. There seems to be some sort of squealing noise coming from my turbo. At first i was thinking it was the blades hitting the housing on my turbo. But i took the intake off and spun the blades and they turned freely and didn't hit the housing and there was no shaft play? So then a Buddy of mine suggested maybe something was loose. I re positioned the downpipe and flushed it back up and put the clamp on it. Still makes the noise. I know the y pipe is tight because when i sealed it up there was nothing around it and i made sure it was sealed. When i removed the turbo that's all i did. take it off. plug the holes. unplug holes. put it back on. This noise doesn't sound like an air leak either. only thing's i can figure is up pipe is not sealed right and i'm not seeing it, I have a crack in my Y pipe, or somehow the turbo is shot. I took it off and cleaned to very well about 15K ago. last night i drove the truck around for a few to see if it would make something click. She didn't have the power that she should and didn't seem liek it was running right to me. like it was holding back. It would spool 29 lbs but took 2 or 3 seconds to climb to it. after driving it around last night i pulled my air filter off right after turning it off and there was some kinda smoke coming out of my intake? it was light but i could see it for about 10 seconds

Anyone have any ideas as to what could be going on?

2005 F250 Reg cab LB XL

Airaid CAI
4" MBRP straight pipe from the turbo back.
RCD EGR Delete
Upgraded Banjo Bolts
Zoodad Mod
Swamps HOT FICM
Lariat Captains Chairs with woodgrain center console

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post #2 of 6 Old 10-19-2010, 04:23 PM
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Pull the intake tube off of the turbo and see if you can see anywhere the wheel has rubbed the housing. That's the only reason I can think of that you'd have smoke coming out ouf the intake like that. Pull the tube on the pressure side and see if you have any metal filings in it.

Pull it off, throw it in a corner and put the Powermax you know you want on it. Look at it as the mod gods telling you to upgrade
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post #3 of 6 Old 10-19-2010, 09:24 PM
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The squealling sounds like an expansion joint broke in your up pipe, mine made an awful squeal and the power was crappy. Smoke out the intake is weird tho????...
Do you have exhaust smell in the cab when idling parked?
I wonder if that smoke could be from your CCV which vents to the intake side?? Hmmm not sure.

2006 Fthreefidy FX4 Lariat, ARP studs, EGR delete, 4" TB BD X-hale exhaust(JUNK), RCD 2.5" level kit w/Bilsteins, Nitto Terra Grapplers, SCT Livewire, Liberator Y pipe, Dieselsites Coolant filter & Delo ELC, Zoodad mod, Swamps HOT FICM, Matts SRL++ & tow tunes, CCV Mod, CompuStar 2way alarm/remote start
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post #4 of 6 Old 10-19-2010, 09:58 PM
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how cold is the ambient temp? sometimes cold can make the wastegate stick open. also ebv is engaged more when cold
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post #5 of 6 Old 10-19-2010, 10:17 PM
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I agree that you most likely have a crack/leak somewhere.

The smoke is most likely coming from the CCV inside the intake right after the filter.
Next time pull the intake off the turbo and see if the turbo is smoking, if not then it's most likely coming from the CCV

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My DD: '13 6.7L with Optimus Prime's wanker still on the exhaust

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post #6 of 6 Old 10-20-2010, 06:10 AM Thread Starter
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I figured it out guys. The gasket that seals between my up pipe and Y pipe was in there wrong. Apparently i had pushed it too far over when i tightened it down, i know what i did i was holding the bolt in the hole and moving the gasket back and forth till the bolt fell through it. Well when the bolt fell i figured it was through the gasket , sure wasn't it was half in the up pipe half out with one bolt in the gasket. luckily i had a spare gasket because both my egr kit and my stc kit came with one replaced the gasket Put all my tools away and took her for a test drive.... All i can say is


2005 F250 Reg cab LB XL

Airaid CAI
4" MBRP straight pipe from the turbo back.
RCD EGR Delete
Upgraded Banjo Bolts
Zoodad Mod
Swamps HOT FICM
Lariat Captains Chairs with woodgrain center console

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