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Old 08-26-2007, 11:18 PM   #1
barry1me
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what does a turbo sound like when its going bad?

Ok I have been having an issue with my boost being about 5-8lbs of boost lower then it used to be. that is besides the point. On the way home today pulling the trailer I noticed a wistling noise.....then it got louder and the pitch changed with the boost. Im wondering if my bearings are going on my turbo....thougts.
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Old 08-26-2007, 11:47 PM   #2
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Sounds like it may be a boost leak in the air to air piping. I've never messed with a 6.0 turbo, but I the one's I've replaced on semi trucks didnt give much early warning- they just kind of ground the bearings and died.

I'd check the intercooler boots first.
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Old 08-26-2007, 11:53 PM   #3
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i just experienced the same thing on thursday, my startd squealing under boost outa nowhere on the boost has been lower then normal for a month or so. pulled the turbo and theres a backing plate behine the turbine wheel that warped and is rubbing the turbine wheel and aslo noticed the viens were pitted bad. ill have pics tomorrow to check out.......u migh be experiencing the same problem.

06 f-250, ats headstuds, new hgs, egr delete,ccv mod, afe stage2, sct, grandrock stacks, 6"procomp, 37" mudgrapplers, airbags,4.56 gears, detroit locker. work in progress- lipd stage 1 turbo,stage 1 sticks, and stage 1 fuel system upgrade.
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Old 08-27-2007, 01:31 AM   #4
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Quote:
Originally Posted by jpscustoms
i just experienced the same thing on thursday, my startd squealing under boost outa nowhere on the boost has been lower then normal for a month or so. pulled the turbo and theres a backing plate behine the turbine wheel that warped and is rubbing the turbine wheel and aslo noticed the viens were pitted bad. ill have pics tomorrow to check out.......u migh be experiencing the same problem.

06 f-250, ats headstuds, new hgs, egr delete,ccv mod, afe stage2, sct, grandrock stacks, 6"procomp, 37" mudgrapplers, airbags,4.56 gears, detroit locker. work in progress- lipd stage 1 turbo,stage 1 sticks, and stage 1 fuel system upgrade.

interesting, please post pics. I just drove mine, and its driving me nuts it sounds terrible.
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Old 08-27-2007, 02:10 AM   #5
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when you let off does the noise go away for a second or too and as soon as u get back in it, the noise come back???
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Old 08-27-2007, 02:17 AM   #6
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Quote:
Originally Posted by jpscustoms
when you let off does the noise go away for a second or too and as soon as u get back in it, the noise come back???
pretty much. When I was towing with the tow file w/jake brake it would do it while decelerating too. Im confused on what it may be.
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Old 08-27-2007, 02:21 AM   #7
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yea sounds exactly like what happend to mine. ill get them pics up asap. what are your plans for replacing it??? warranty, aftermarket???
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Old 08-27-2007, 02:27 AM   #8
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if you get a chance, take your intake off and see how much endplay there is in the turbo shaft, if it seems slopy and u can actualy feel/here it move, its junk. theres supossed to be a tiny bit of movement for clearance its kinda hard to explain.
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Old 08-27-2007, 03:55 PM   #9
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We had one go out on an 06. The only warning sign was when you shut the motor down you could hear the veins scraping the sides of the turbo, sounded like a metal fan that was just barely scraping its metal shroud. This went on for about a month and then the tubo just quite working.
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Old 09-28-2007, 01:06 PM   #10
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alright the noise that we thought the turbo going bad or possibly a bearing on its way out was this! lesson learned



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