Passat B6 Dead Turbo

[tickorama]

Hi All,

I have a VW Passat B6 55 Plate with a 2.0 TDi BKP engine.

A few weeks ago, I was driving along and lost all power. Pulled over and parked up the car in preparation to call the AA. I then needed to move it from where I had temporarily Parked it, when all hell broke loose.

Whilst I started pulling away, the car produced the Oil Pressure Warning. Smoke was bellowing out the back of the car. Then the STOP Garage warning appeared. I then attempted to stop the car by removing the key, but the car carried on running and revving harder and harder and making a loud tapping/banging noise. I tried in a panic to try and stop the car, but was unable to, until a passer by said to try and stall it, which eventually did stop the engine. I guess it ran for a good few minutes with smoke bellowing out the back and the warnings being displayed on the dash.

The AA towed me back, and my stepdad (A mechanic) came and looked at it, removing the pipes in to the Turbo and then feeling that the impleller is completely busted.

So we have slowly in the evenings removing and fitting new bits. I have replaced the intercooler, the oil return and feed pipes have been replaced, the old turbo pipes cleaned out. A reconditioned Turbo has also been fitted and we will be putting the pipes on to it this weekend.

My question is what could have caused this? Just general failure of the turbo? Or after reading some posts do I have a faulty Oil Pump or would this gradually fail over time? And I guess the main question I have to ask, whats the probablity that my engine is completely busted?

Any replies will be greatly appreciated.

Thanks
Paul

[bigrich1]

Hi,

Sounds nasty! The question I would ask is which side of the turbo is bust (exhaust rotor or air intake rotor) - if it's the air intake side then you have to ask where have the broken pieces of turbo gone :confused:

If they have made it up into the inlet maniifold and into the engine then you could have longer term problems.....I would personally strip the broken turbo and all of the air inlet pipework to try to ascertain that you have all of the bits!

Rich;)

[martin1810]

It's a fairly common diesel turbo fault. The oil seals on the turbo failed so the engine oil was sucked in and burnt in the engine. That's why it wouldn't switch off. A recon turbo and new oil pipes is usually all you need for repair.

[tickorama]

Thanks for the replys guys.

After replacing the Turbo and Intercooler, it seems to be running fine now - all good considering about only 500ml of oil came out the sump, there was more in the intercooler than the engine :)

Only issue now is "Emissions Garage" warning and the Engine Management Light Flashes. I think this is because I have a faultly inlet manifold motor as fuse FB23 keeps blowing.

[adamss24]

You were lucky that you did stop it quick enough ! Usualy the rods bend like chopsticks due to too much oil in the cylinders which cannot be compressed so something has to go...

[DSG4ME]

How would you stop a DSG if this happened, slaming it into gear even with the foot brake had down is likely to smash the gearbox up isn't it?

[Teflon]

How would you stop a DSG if this happened, slaming it into gear even with the foot brake had down is likely to smash the gearbox up isn't it?
Everything on the DSG is acutated electronically, the selector lever just triggers hall effect switches and the signal is interpreted by the gearbox gubbins, which I assume will protect the box.

The only mechanical linkage is the parking pawl for "P".

The only thought that occurs to me would be to block up the exhaust and hope that the back pressure will stop the show, same as it would on a petrol engine. Dunno though!

Or maybe try to deprive it of combustion air? The air filter box can be a pig to remove so it would probably be game over by the time you had stuffed something in the inlet.

[DSG4ME]

Thx, you gave me ideas there, with the air box there is a simple plastic cover on the inlet, this should be stuffable withing seconds of opening the bonnet, think that would be the best way to go.