turbo screaming. HELP PLEASE!

[jardz91]

In my 3lt 01d22 the turbo has started makeing an extremely loud screaming sound.
it happens around town or driveing relativly slow under boost. even only mild boost. the noise settles on the highway after a good run but once acceleration is backed of it starts screaming again when i accelerate again. . i noticed alot of oil around front of turbo where the air filter comes into it.
possible cause? Soloution. could a pipe be loose or will i be up for a new turbo? under a fairly tight budget so hopeing not.. any help please!

 

[Dunkly]

Have you made sure all your hose clamps are tight? And check for cracked/split pipes, Sounds like a boost leak to
Me

 

[jardz91]

Ill check cheers. the amount of oil on it seems strange but

 

[nathand22]

Check the EGR pipe all the way around, there has been more then a few people report the same symptoms as you.

You Can block it at both ends and put the pipe back and if it doesnt fix it you lost nothing, most people block the EGR anyway.

With the oil leak check the four small allan head bolts on the back side of the turbo cartridge, there has also been more then a few people including my self where they have come loose, and in my case one fell right out on the freeway and made a real racket.
When they come loose the turbo leaks oil everywhere.

 

[nathand22]

Oh and you will need to cut the allen key down so that it fits in the gap for the bottom two

 

[jardz91]

Which is the EGR pipe? Sorry im not the most mechanic minded person ever

 

[nathand22]

the best way to find it would be some pics, as i dont have the d22 anymore you will need to look through the forum in the d22 section.
there are heaps of threads and most have some pics

let me know if you cant find them and i might get Dave to post some up.

 

[jardz91]

Cheers

 

[nathand22]

om here is one link you can have a read of it has a few extras but you will be an expert at the end of the thread lol
http://www.navara.asia/showthread.php?t=4713

And here is another both have all the info you should need, but in your case you will need to block both ends or find a second hand pipe and just do one end.
http://www.navara.asia/showthread.php?t=64

 

[jardz91]

Cheers heaps much appreciated. ill let u know ho i get on

 

[luke91]

Is it like a rattling screaming? Could be a fucked turbo. That's what mine done

 

[Lawry]

just check shaft play with comp wheel.

Otherwise a scream/screech noise is a boost leak. Get a boost guage as see when the noise starts. I have a gentle scream on 13-15psi. Need to get a better hose and some boost T turbo clamps.

Dont panic

 

[jardz91]

Yea thats it. had hose clamp loose put new one on and still the same

 

[luke91]

Yeah Ide be cheakin if there's any play on the shaft in the turbo aswell. . Hopefully there's not

 

[jardz91]

How do i do that?
New clamps put on loose pipe and egr mod done. still screaming

 

[tweak'e]

ffs if it sounds like a failing turbo, DO NOT DRIVE IT.
if its fails completely kiss your engine goodbye.

pull the front off and check how much slop there is. if there is some pull the whole turbo for a closer look.

i assume your not talking about some slight whistle noise which could be crack egr tube or split boost hose.

 

[scottybobcat]

What Tweake said. You will blow your budget when the turbo explodes and goes through your engine.

 

[luke91]

From memory I think it's only 3 bolts you take off the front of the turbo? Correct me if I'm wrong? My navs at work

 

[jardz91]

Off the guard?

 

[luke91]

Where the pipe from air box goes onto the turbo just under there. Hope this pic helps just got back to work