Hi all, I think i have may have a faulty PCV valve on my 20tfsi A4. Oil around the rocker cover and coil packs, small amount of suction on oil filler cap, when the oil filler cap is removed the engine stutters and then stalls. Tickover is a little lumpy but always has been I also have increasingly high oil consumption - now around 1ltr to 500 - 1000 miles depending on use (better on M ways). Other than this the car runs fine. Any help and advice appreciated. It's a Sline special edition (22bhp) Avant Quattro 2007 model.