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Hey Rob, thanks for the reply. I try to have a look at the DV soon. I think the only way to access it, its from under the car right? When I open the oil cap, I can hear air leaking from the rear area of the PCV. Do you think the O-ring of the pipe could be bad? I was thinking about to replace...

Hi all, A few month ago I bought a 2004 A4 B7 2.0TFSI, 111k on the clock and a service history up to 105k. The problem is that the car is leaking power. Before I got the car the PCV valve was replace from a Audi garage (April 18), but as soon as I open the oil cap or pull out the oil stick...