2.0T How to verify faulty PCV? Guides available for replacement?

[BlazinB5]

Girlfriends C7 A6 2.0T is burning oil and has 200,000 miles, so I was thinking of checking that out before anything. It only recently started consuming oil, and isn't leaking it.

I think I heard you could do something with removing the oil cap and that there should be suction (vacuum) while it idle. Then I saw a clip on YouTube with a guy verifying it by removing one of the tubes coming from the PCV and putting his finger in the hole, paying attention to how the car idles. The info from YouTube (or me) could be wrong, so it would be awesome if others could chime in. Appreciate the help!

https://www.youtube.com/watch?v=Q3MmILk9A8M

https://youtu.be/FTpxAcMLVNc?si=EPQ1B-X1IbXOjjUA

Edit: I tried searching "PCV" using the "Advanced Search" option and it ironically returns "Sorry - no matches. Please try some different terms."

[Botbasher]

The first video is looking at an FSi... the second at a TFSi... so make sure you are following the guidelines for your specific motor.

Otherwise, both "diagnostics" are good enough to start but remember that cars are subjective. I have had good vacuum that'll just make the cap dance and one I couldn't pull it without force. Both good. It's a tool... not an absolute.

You can pull the covers off the diaphragm and look to see if it's physically damaged to confirm.

If you have a suspicion that your PCV is bad on a 2.0t... fix it ASAP!!! OEM RMS's are very weak and it'll blow it out in short order. Just had to redo my brothers that went bad in the span of 2000 miles! Don't ignore it!!

Good Luck!

KS

[Botbasher]

Edit: I tried searching "PCV" using the "Advanced Search" option and it ironically returns "Sorry - no matches. Please try some different terms."

Yeah... search engines do not like 3 letter searches.

Cheers,

KS

[Mesquite77]

So, search the Audi A4 B8 or B9 forums (too bad you didn't tell us the year or engine model) they have tons of 2.0L there.

or in youtube search for "caeb pcv replacement audi" or audi calls it an "oil separator". I've DIY'd a few years back, easy job...