Audi A6 1.9 TDI: Oil Leaking Around EGR Valve, Engine Power Loss and Turbine Issue Resolved

Hello ,

The area around the EGR valve, as in the photos, is lightly flooded with oil. The last time a mechanic rummaged there about 60,000 km ago because when the hose marked with an arrow was connected to this valve, the engine lost power, as if the turbine was not running at all. The mechanic disconnected the hose from the valve and screwed a screw into it as in the photo. The car actually runs ok, the power is ok, it does not smoke, it does not take oil, no errors, only sometimes when you run it hard, it catches an error (nothing on the dashboard appears) but it loses power, again as before, as if the turbine does not it worked. Then just turn the ignition off and on again and everything returns to normal. Then you can saw it, but it does not enter into this mode.
Since I am getting ready to replace the timing gear soon, I would also like to finally solve this problem because I doubt that it would be like the previous mechanic said that such a leak is nothing serious and almost every 1.9 has it? | What do you advise?

Hi, you are right, this is EGR and as you wrote the answer, I corrected what it is
The turbine is said to work ok, as I was checked by the mechanic who blinded the cable and the car itself also runs fine and does not take oil.
This electro-pneumatic valve from which this hose goes to the EGR flap actuator was replaced with a new one from the site and it did not help, and there are no errors on the computer. And what ? Thanks for the reply

And how to diagnose it because no magician has a clue what the kaman is about

So listen up. I did it myself because I'm fed up with those idiots who take money and do nothing. I am not a mechanic, but in 40 minutes I was able to remove the entire EGR. It is a pity that my hands are so dirty because I know that I should make a photo of what I found there. There was so much to Nagaru that the EGR valve had no right to work, there was rather no one to check it from a new one. Of course, I had no way to check the EGR itself, because I do not have the equipment for this, but I blocked the inlet valve with my finger and pressed the valve itself from the bottom to see if it gives any pressure at all, and it was ok. I cleaned it all up, polished it and put it together. Temporarily 3 hours. After firing it, it sprinkled for a while and it's ok. I will add that I also connected the hose to the EGR flap actuator as it should be and the car works. We'll see how it works in the long run, but so far it looks promising. As for the presence of the oil itself, there was a bit of it in the inlet pipe to the EGR valve (the one that goes to the EGR from the side of the casing, and I'm wondering where the oil is coming from?). Let me know and thanks to everyone for good and right advice. Greetings.

You are right the carbon deposit and the oil did not appear out of nowhere and I know that I have to go to the mechanic because I cannot handle it myself. The oil was in the line leading to the EGru from the side of the casing and as I read the reviews, it is said that in this engine it has the right to be there a little ???
I was going to unscrew the intake manifold, but the screws are so rusty that despite the rust remover and scrubbing with a wire cloth, they did not even twitch and I am afraid to twist them.

So now, I am reviewing my topic and I will add that the problem is solved after replacing the EGR, I have done about 1,000 km since then and it is dry.