I'll try that 🙂 I might have done something more than Installing mindeliszz sounds, but that shouldn't affect the engines functionality 😛
Added 22 hours 49 minutes later:
I solved it :-) I analyzed the engine block java for baiern 3.6. Guess what Mindeliszz 😉 Well there was a problem with a mod hehe! I modified the java with a sound from Shift2 and "the_car.starter_torque = 30.0;" was missing in the code :-)