Hello, I have an Audi 80 BJ: 1993 with a NG2. Run the car has just under 160tkm. Currently I have the following problem: I get into the car in the morning and start it. The engine runs extremely undertouring and then drains off (see audio file)https://www.dropbox.com/s/9lf7anznwxk145h/absaufen.m4a?dl=0 Also to be heard is the exhaust leaking or was. The connection clamp has been replaced by a minicat and is now dense. Ignition distributor to 12 or 15 degrees before OT makes no difference. Tooth belt tension and OT markings are also OK. Also, the small “wrong air test” with lifting the oil cover achieves the desired resulthttps://www.dropbox.com/…/video%2023.08.14%2017%2052%2029.mov?dl=0 You can also see that when I have the car running at multiple start, the residue housing can run rough?