Help Diagnosing a B5 Tdi Turbo issue with

[Kelvin Williams]

I have no boost and it makes a funny noise when driven ( hear vid ) , no noise on tick over , and it gets louder with more load .


I have checked the rubber pipes and cant find a leak , the compressor spindle looks ok.


I'm looking for the cheapest way to repair this if there is one !

 

[Kelvin Williams]

PS let me know if you can see the video as its saying i need more posts to share links ?

 

[Bradderz_1988]

Check to see if the compressor wheel is actually moving when the engine is running also did you check for any play in the shaft ??

Sounds like a major boost leak or the turbo shaft has snapped and sheered a comp wheel. Check the EGR circuit to see if theres any exhaust gases leaking, but it does sound more compressor side of things from that video.

 

[Kelvin Williams]

The compressor is spinning away nicely when on idle , it does look like it might be hitting the side though ,

I can feel a bit of play in the shaft , but i have no reference as to what is normal , it feels like im moving it less than a mm .
When driving literally 0% boost though , like i was driving without the turbo actuator connected.

I think i will just do a proper job and get the whole system out , probably could do with a few new pipes ...

 

[adamss24]

Check for play in And out, it does sounds like it's on last legs... Beware That Diesel engines can run on own oil so- when shaft breaks- you won't be able to stop the engine unless you stall it In gear ! It's a good time to upgrade the turbo to a gt1749va or a bv43 turbo if you decide that 110 Bhp is not enough !

 

[Kelvin Williams]

What do you mean by check play in and out ? check the compressor side?
It dosent feel loose , its an oil pressured bearing isnt it , so when the engine is of there will be a a tiny bit of play in the shaft wont there?

Yea one of those turbos and a re-map would be tasty , however im poor , i might have to go n/a........

 

[Broken Byzan]

that turbo is broken.

 

[Kelvin Williams]

that turbo is broken.

So definitely nothing to do with the pipes ?

 

[Fire26662]

Sounds like something is touching the housing. If you can see marks in the compressor housing it's a fair bet the bearings have had it.

 

[aragorn]

You can see the edges of the compressor wheel are mashed and the inner bore of the housing is all marked from where its been rubbing.

 

[Kelvin Williams]

Yea it is quite sharp , i cut my finger on the blades .

I took off all the pipes and it still makes the noise so it cant be any leaks .

I am going to head down to " All Audi" in Bristol to see if they have any nice turbos in

 

[Kelvin Williams]

Seems like there is very little play , i have taken of the flexy pipe and the other side feels as tight , it does move slightly though.

 

[Kelvin Williams]

New used turbo and there is boost where that was no boost before.
.

 

[jbh]

if its any use to you I just took the standard turbo off my car yesterday as going to fit a gt1749va to my car.

 

[Andyb5tdi]

Just out of interest what power is a gt1749va good for? Is it the standard TDI 130 turbo?

 

[Kelvin Williams]

if its any use to you I just took the standard turbo off my car yesterday as going to fit a gt1749va to my car.

Do you still have this by any chance ?

 

[Kelvin Williams]

Just out of interest what power is a gt1749va good for? Is it the standard TDI 130 turbo?

Yea it was the standard turbo , it's gone again ....
It has 110 bhp apparently but it has enough torque to get you about