Lost horses.... If found please return.

[Paul Smith]

Hi

Update new MAF fitted and it's now smoother and nicer than it's ever been but the engine is still holding back. On a positive everything changed so far has made her feel better and better so hope we are looking for the last push.
I didn't redo the Mr muscle as I wanted to fit the maf see if that sorted it.

My mrs is poorly so won't be able to check pipes for a few days but kind of hope it's a pipe and I find it.

The pipe that connects to the turbo although I refitted still seems strange. The metal connector reduces insize and has a rough rubber pipe jubilee clipped to it. Just doesn't seem correct. What pipe do others have on the turbo so I could compare.

 

[Paul Smith]

Still issues. Power for a few miles about 15 then it's like the turbo turns off grrrrrr.

Loads smoother with the new maf

 

[R3k1355]

No error codes with VCDS at that point?? Almost like the ECU puts the car into limp mode?

Does the power come back if you turn the car off, wait a minute and turn it back on?

 

[Paul Smith]

No codes and very much like lump mode. It does come back if turned off for a few minutes but might not have power as long as you did first time

 

[R3k1355]

Sounds like an odd sensor issue, crank angle, coolant or something?

You might have to go out with VCDS, log live data and wait for it to happen. See which sensor suddenly starts giving odd data.

 

[Paul Smith]

I'm not so good at knowing what sensors to look at and what is or isn't normal :-(

 

[Paul Smith]

So re checked pipes and found one that I thought looked iffy so reseated that one. Got quite a lot of oil leaking which looks to be from the turbo, the part the connects the air pipe to the turbo and there was more oil than I expected in the air pipes. So possibly a seal on the turbo on its way out. Or possibly the pipe the connects under the turbo doesn't look factory to me so really need to find a new connecting pipe if anyone can confirm which pipe is meant to be there.

 

[Paul Smith]

Still no power.
Think I need to go to seat to buy this boost pipe as I don't know which one it is online and due oil leaking from the turbo I guess that can't be good either

 

[R3k1355]

I've often found Diesels have quite oily boost pipes, but if you've found ones with oil leaking out you can be sure they're leaking a ton of boost.
Chances are both pipes connecting the intercooler are leaking, the boost pipe connecting directly to the turbo and the intercooler core could be leaking around the end tanks as well.

Whats this pipe that connects under the turbo you keep mentioning?
This is the diagram for the boost hose and intercooler layout.

 

[Paul Smith]

Thank you for the pic but it's confusing as my engine has a pipe from the turbo at the rear over the gearbox to the intercooler and from the front throttle body straight down to the cooler.?

I have re fitted my old n75 valve which has given me boost so would suggest new n75 valve was faulty. Lots better except lag between gear changes but a vast improvement. That still might be the pipe from the turbo letting air past

 

[R3k1355]

Thank you for the pic but it's confusing as my engine has a pipe from the turbo at the rear over the gearbox to the intercooler and from the front throttle body straight down to the cooler.?

Like this?

 

[Paul Smith]

That's more like it. The pipe I refer to is pipe 8 and the connector to to the turbo jubileed by 9. This connector has lost its seal.

 

[R3k1355]

Isn't pipe 8 just a standard rubber pipe?? It wouldn't have a seal?

What does it connect to? On the later common-rail engines there's a inlet damper on the turbo that pipe 8 connects to, that often develops a leaky seal.

03L131111G on the common-rail engines.

 

[Paul Smith]

It is but it jubillees to a connector that clips in the turbo and that connector has a green seal. Or in my case, had lol

 

[Paul Smith]

A bit like this but solid

 

[Rusty2k]

Is that on the inlet or outlet side of the turbo? There certainly shouldn't be any oil in the pipes on the inlet side.

 

[R3k1355]

Is that on the inlet or outlet side of the turbo? There certainly shouldn't be any oil in the pipes on the inlet side.

Outlet side as you wouldn't need those green pressure seals on the intake side usually.

I think the OEMPC diagram I put up for the Leon isn't correct, I'm not sure they have the correct one on the site?

 

[Rusty2k]

Outlet side as you wouldn't need those green pressure seals on the intake side usually.

I think the OEMPC diagram I put up for the Leon isn't correct, I'm not sure they have the correct one on the site?

There is a seal on the inlet side of the turbo. You wouldn't want the turbo sucking in unfiltered air would you?

https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/turbo-inlet-adapter/3c0129635/

http://www.oemepc.com/seat/part_sin...129/subcategory/129040/part_id/1397847/lang/e

Parts 15 / 16 on that drawing

 

[Paul Smith]

The outlet side going down lol

 

[Rusty2k]

The metal piece on the end of this hose sounds like what you're talking about...

It doesn't seem as though that is available separately and appears to be sold only with a new hose, part number 3C0145828F.

The seal on the end could be 3C0145117F but not 100% sure. It's listed as 57.85mm in size.