Engine deceleration and automatic flameout：
When the engine is released, the accelerator pedal is released or the vehicle automatically stalls when the vehicle is running. The fundamental reason is that when the engine runs from non-idle to idle speed, the idle speed is not stable, so the vehicle immediately stalls. Specific reasons for the accelerator pedal failure; crankshaft position sensor and the camshaft sensor signal is not synchronized; fuel pressure failure; control unit signal error; fuel injection timing is not correct. Should focus on checking from non-idle to idle when the numerical changes.