this little valve sits right on top of the airbox on the 1.8t. it makes a really loud ticking sound like valves in need of a tune-up but then sometimes it stops and doesnt tick at all. its kinda of weird. i'm just wondering what it is and is it normal for it to tick like that all the time?

 

I don't know the correct name for that part, but thatclicking sound is normal.

 

I'm pretty sure thats the PCV valve and yes its totally normal that it clicks like it does. But icould be wrong though

 

Yes, it's the PCV valve, and yes it's totally normal. If you still have doubts, make sure the PCV return is secure and the connections aren't loose.

 

are you sure that's the pcv valve? i tried looking for a pcv valve for the 2.8 but apparently we dont' have one and auditech79 said so too. my 2.8 has the same thing right above the airbox

 

hiwords, you guys have a PCV valve

https://www.audiforums.com/m_782913/tm.htm

 

im pretty sure thats not a pcv valve, i think its the "carbon canister" or the gas evap system

pcv valve looks quite diff i thought

 

so the black thing under my circle is the pcv? ok cool, i'm gonna have to change that probably lol. but the question still remains, is that thing above the a pcv because it definitely looks different than what's in my pic

 

http://en.wikipedia.org/wiki/PCV_valve

Come on children

There's different types of PCV valves, but they all look somewhat similar. If you guys don't think you have PCV valves, try finding a PCV return (as I said earlier), I'm not exactly sure what it looks like on a 2.8, but here's one on a 1.8:



Taken from:

http://www.a4mods.com/index.php?page...ages/apr3.html

 

that is not a pcv valve, it is not even remotly connected to any oil at all, the pcv system has a "pancake valve" either on the intake of he turbo, or behind the cam chain/tensioner area.

for once i can say that you guys are wrong, a pcv system has hard metal pipe going into the intake