It may be that a too early start of support has the following symptoms: -Motor starts cold immediately; no organ -no visible smoke -On a straight track immediately ready to drive. However, in the 50 km/h range (approx. 1700 rpm) easy jerking. After 2 minutes no more jerking there. -Already on a slight climb (1700 rpm range!!): standstill; car stuck tight. Must then be run in stand 1-2 minutes. After that it is climbable. -After warm start it needs “a second” too long until it rolls off.