Once again I… Found my problem at the U25DT. The steering chain skipped and probably on the steering wheels on the ESP. I adjusted the steering times. The start of the conveyor was adjusted by 2mm when the synthtom entered (engine runs at once unround, smokes black and then no longer jumps on), the standard is 0,90mm. At the start of the conveyor I can no longer reach the standard and by turning back of the engine I clearly noticed how the steering chain ÜB ERSPRINGT. Oh yes, chain tensioner is also ok. I have experienced this problem with both Omega’s also X25DT from Km 220.000. Thank you BMW!!! Has someone from you already had the same experience? Greetings Karl