Nermb

Hello everyone. I got a bad pcv valve on my 2013 A8L 4.0T. Before I get attacked for being on the wrong forum, I know this is the S6 forum and not the A8/S8. However, it's basically the same engine and I was wondering if anyone here changed the pcv valve by themselves on their 4.0T. I took everything apart all the way down to the PCV Valve but then I wouldn't take the pcv valve itself off. The way this valve connects from the look of it is it slides in on both the front and the left side. I took out the intake hose, turbo vacuum hoses, the air tubes for the turbo to intake, all the way down to the point where the pcv valve is right on top and the only thing your looking at (along with whatever is left attached to it that it slides into). My question is.. what is that last step to slide out the pcv valve as it cannot be moved front or back? Any help would be greatly appreciated.

m444

There is a nice overall picture of the oil Separator here:

https://www.audiworld.com/forums/a8-.../#post24973136

Apparently one should remove the charge cooler assembly, first:

Nermb

by any chance, did you find that picture in a instruction manual or something for the 4.0t? Was curious if I could find the steps where It says to click on removing the charge cooler. It looks like The charge air cooler housing is the last removal step before taking the oil seperator out that I couldn't figure out before. Thanks for your help

m444

More info here: http://www.alldatadiy.com/buy/index.html

Mech12

you have to take everything out including the bumper assembly. It is like 2-3k dealer service item. Thanks God I do not have V8T engine:

https://www.audizine.com/forum/showt...arator-R-amp-R

DeerHunter

Yup. When mine was replaced (under a TSB) the whole front bumper came off. It was a full-day job.