At the start of the movement often occurs a limiting case of leap - failure. Most discomfort is associated with a delay in the response of the engine pedal "gas". Sometimes, even with the engine stalls. Jerk occurs at the beginning of opening of the throttle valve when the signal throttle position sensor control unit determines when switching between idle and under load should increase the amount of fuel supplied through the nozzles. When there is insufficient pressure in the fuel line (even with an increase in the duration of injection) fuel for smooth starting-off is not enough. The procedure of checking the fuel pressure cm. In section
"Power supply system check engine".