Hello friends, I bought 3 weeks ago a 745 bj2002 with 161tkm. at the purchase was to hear from the engine a clapping, it was a hydrostössel and I also thought it. a friend, who is at skoda master, was also the opinion that it is a hydrostössel clapping. yesterday I drove with it to bmw and they are of the opinion that it is more a mechanical beat than a hydrostössel. they have to disassemble the motor etc. Afterwards we have the car from a friend at m ercedes picked up and since we were already there, I also handled the meiser around his opinion, also he went from hydrostössel. does anyone know the causes, what could cause the clapping? I guess it beats 1-2 times the second, if I give gas faster!