Hello. I was just with my 850 2,5 tdi elch at the TÜV…wouldn’t have been a problem…just… After the first acceleration at the ASU the engine stuttered and went out.After that started again but also immediately after stuttering out again. There was no smoke generation, did not get hot, engine doesn’t oil or the like. … Now there is more happening if I want to start, i.e. the starter would like to but it feels like what is blocked. The timing belts are both still on and so far as possible rib belts have been removed and up to the bottom wheel (drive shaft??) spin all. What could be going on there? Does anyone have an idea? Motor damage? But in what form? Can I still do something or go to the slaughterhouse? Best regards Martin