Two replacement and still leaking seal on the Audi A4 B6 valve cover

Hello. The subject concerns the Audi A4 B6 1.8t 150HP. Namely, I am dripping oil from the crescent from under the valve cover gaskets. I have already fixed the problem 3. I bought a new Victor reinza gasket, I installed it without silicone and it was a liquid from the back of the engine. I unscrewed and gave silicone the whole gasket and then it was liquid from this element. I thought maybe the lip seal gotten to me and I bought the second, they were just the same brand, but Victor reinz is the highest shelf. I put on a new gasket and gave it only on the corners and folds with silicone and it still drips from the crescent. When turning, I start from the middle side and later diagonally. Odtluscilem well. I tighten the screws tight but not too hard not to break. I mentioned once in A3 also in 1.8t for a seal with half cheaper Febi and there was a guitar, it was not liquid. Someone will advise you what to do? Maybe this whole element, that is, crescent give silicone craving? Or buy a gasket from another brand? I would add that the silicone was used by the wurth brand.

I think you do not have a leak from the crescent but check the chain tightener well.

I cleaned, I passed and around the crescent is bitterly and the oil is at the very bottom in its center. As if the seal was not tight at this point. Maybe I'm using a bad preparation for degreasing. For at least the last two times it was a solvent and not an extraction gas. Although I did not leave the gasket on my way, I did not leave the seal and the cover itself was dry.

I used to do it similarly and after a thorough degreasing it was obvious how it gently leaks
from under the tensioner to the corner of the crescent and further down.

Thanks for the advice. I checked carefully and it is not a tensioner. The tensioner and around are dry. The crescent wall on the tensioner side is dry and the oil is on its very bottom and on the wall on the opposite side, ie the left side. As if liquid from this corner was flowing. Only that silicone went there, but it went thin. Earlier, I spent it thickly. Maybe I started the car too early because after about 2 hours. I do not know what to do, whether to undress and give there a thick silicone, or maybe invest in a seal of another brand, for example, with febi it was not a problem. Or maybe the lid is guilty. Somewhere I read that there is a pressure limiter on the heels. Maybe, under a nut, give a pad to make it more useful? Is something like this doing? I do not want to undress it too much because in the end it will break down. Someone suggested that I was swamped but the car is going on a Valvoline synthetics and after 15 thousand oil does not even do black, the interior was very clean. And it has a legal mileage of only 220,000 km.

You can try to give the washers and tighten 8/10 nm.

gsekulski wrote:

I checked carefully and it is not a tensioner.

As for me, you are constantly describing the leak between the tensioner and the head.

Welcome back. Cleaned complete pneumothorax, said tee, elbow, crankcase vent valve. Once again undressed cover, I gave it well with silicone. And then it is leaking from the same place, i.e. when you look at the engine in the front, it leaks from the corner on the left side as the crescent begins. Cover rather falls out because it runs from the bottom of the gasket. The tensioner falls off, it is dry. It is not a big leak but it is. Anyone have any suggestions? Maybe this victor rainz for this engine does not make very good seals? If there is no idea, I think I should invest in a proven Febi and give me zero silicon. After the test, the card is strange, it does not draw in but it does not blow out somehow, applying the cork as if it was pulling in gently.

Hello

Has something been determined? I have this problem myself. 3 gaskets for the cover already mentioned, once under the tensioner and clear leaking from the crescent ...

Hey. This is a threadbare topic It also leaked a bit from the gasket under the tensioner. They just exchanged the tensioner and its gasket. They also sealed the lid of the workshop, of course. 2 months was calm. The crescent moon began to creep me again. I sealed it with silicone on the outside and I have peace of 7 months. Also trim the crescent from the outside, give it silicone and observe. If it's not liquid, it's git. If you start to cut it higher, the tensioner gasket also lets it through or something else. I bought the second cover and it was the same. It's best to give silicone from the outside and that's it. Because this is how you exchange the engine's half for new ones

I think I found a problem and read a little about the issue itself. A topic that is often but nobody talks about it

Namely, it is about oil reflux. Clogged blocks the crankshaft bleeding, creates pressure and then you can imagine what is happening.

For me, on the tee with a non-return valve, there was one big oil glue that did not let anything go.

I suggest to everyone struggling with this problem, look at this felted tube. Work a little, the risk of damage is none (well, unless the oring at the engine block) and the effect, even if it does not completely solve the problem, will satisfy everyone.