Hello… I have the same annoying problem with the gas. Always when switching the engine turned up. In addition, I have the feeling that the Ka somehow did not pull properly and cleanly. After extensive research in the nternet and many visit at the workshop, nothing else remained for me to test as test…… AND HERE THE SOLUTION OF THE PROBLEMS…… 1. When the motor is running, remove the plug from the throttle valve …. while he is crying out for a moment, but then quickly catches up 2. With pulled off 10 Km. He still has the problem, but clearly less 3. The battery plug off ..I did it overnight, so that the control is emptied properly 4. In the morning the battery again connect and start engine 5. Now connect the plug of the throttle flap …while the motor wakes up briefly again, again quickly starts. That’s it, with me it helped I hope it funz with you too…. Would I be happy about feedbacks.