Noise from under turbo (video) - Ford Powerstroke Diesel Forum
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Old 02-20-2011, 05:08 PM
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UPDATE: Noise from under turbo (video)


I recorded this with my phone, but you can still hear it. It almost sounds like a bad pulley, but coming from rear of engine. I really hope it's not the turbo. It only shows up after 15-20 minutes of driving and it doesn't go away afterward until it cools down.

Diesel tech at the Ford dealer listened to it, and then said "I dunno off hand, but I wouldn't worry about too much", he also drove it and said it has plenty of power and drives just like it should.

Should I worry though? Also, it's rather annoying. I may not worry about it too much if I actually knew what it was I wasn't worrying about

I have checked the vanes in the turbo, they seem fine, no excessive play and no contact with the outer walls of the turbo.

Someone on another site mentioned lifter/cam issues, but I would assume with a worn cam/lifter, it would affect idle/power. Idle is as smooth as can be, and power doesn't change. Still has plenty of it.

Last edited by wezol5484; 02-25-2011 at 07:49 AM.
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Old 02-20-2011, 05:18 PM
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I'd pull the black tube off the intake side and look inside at the blades and see if there is any damage. Take 2 fingers and see how much play is in the shaft. It definately sounds like a metal to metal sound.
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Old 02-20-2011, 05:31 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
I'd pull the black tube off the intake side and look inside at the blades and see if there is any damage. Take 2 fingers and see how much play is in the shaft. It definately sounds like a metal to metal sound.
That's what I checked, I may of used the wrong verbiage. It all looks good, and there is no play in the shaft worth speaking of. It has very slight end play but common sense tells me it's within a normal range. MAYBE 1/32?
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Old 02-20-2011, 05:36 PM
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I'm guessing coming from the rear drive/ HPOP area
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Old 02-20-2011, 05:40 PM
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Quote:
Originally Posted by late_99_PSD View Post
I'm guessing coming from the rear drive/ HPOP area
That was gonna be the next suggestion.
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Old 02-20-2011, 05:49 PM
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very unusual. sorry i don't have any suggestions but i'm interested to hear the diagnosis

edit - actually after listening to it a few more times i'd be looking more towards the turbine end of things. the way it clangs it almost sounds like its generated from inside the exhaust. wonder if maybe a vane is coming loose?

Last edited by sinner6.0L; 02-20-2011 at 05:53 PM.
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Old 02-20-2011, 05:50 PM
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Could the HPOP make a noise like this?

Does this mean I can put lifter noise to the bottom of the list?

Could it be something as simple as a leaking boot, or exhaust leak? Kinda like header gaskets on an old motor, they can start leaking after warmed up.

I'm thinking of taking it by the dealer tomorrow and having the tech come out and take another look at it.

I WILL sleep better if I can put the cause of a bad lifter at the bottom of the list though...
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Old 02-20-2011, 05:52 PM
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Quote:
Originally Posted by wezol5484 View Post
Could the HPOP make a noise like this?

Does this mean I can put lifter noise to the bottom of the list?

Could it be something as simple as a leaking boot, or exhaust leak? Kinda like header gaskets on an old motor, they can start leaking after warmed up.

I'm thinking of taking it by the dealer tomorrow and having the tech come out and take another look at it.
Do you have a stethoscope? You could use it and move around until you locate the source of the noise.
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Old 02-20-2011, 05:57 PM
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even a long bladed screwdriver with the handle up against your ear can be helpful in locating a noise. let us know what you find

can't always rule it out from the vid but it doesn't sound like base engine to me
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Old 02-20-2011, 05:59 PM
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I think I can rig something up to listen with.

I've always heard lifters making more of a ticking/tapping noise vs. the noise in the video. I also don't know how deep lifters sit in the 6.0 vs. something like a 400 ford gasser.
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