Hi all, after a bit of investivation in to my S3's "cylinder bank 1 running lean" problem, i have checked the seal between the CAI kit and the car, i have changed the plugs and yet i still have the light coming on and a reduction in power.....
Now, i have been reading about this crankcase vent valve and it mentions something about the car running and removing the oil filer cap.
I have just removed the filler cap (it was fairly tight) and the car sounded as if it wanted to stall and sounded rough. I put the cap back on and all seems ok.
Do i have a faulty valve, or is this normal?
This is starting to get to me now as i love this car