Excuse me, why did the car stall without stepping on the accelerator? What is the reason?

1. Oil circuit fault: When the engine is working normally, the oil pump pumps the fuel out of the oil tank, enters the distribution pipeline through the filter, and then sprays it from the fuel nozzle to form an oil-gas mixture. In this process, the fuel pump and injector are most prone to failure, followed by the blockage of filter and oil circuit. If necessary, you can clean the oil circuit. In order to reduce this situation ...

2. Throttle blockage: There is no doubt that the throttle is the most important component and the most prone to problems. Under normal circumstances, maintenance personnel will consider cleaning the throttle valve. However, if frequent cleaning of the throttle valve still cannot completely solve the flameout problem, it is generally a fault. In addition, check the vacuum pump to see if the air intake is normal.

3. Abnormal ignition of spark plug: When the gasoline engine is compressed near the top dead center, the combustible mixture is ignited by the spark plug, so when the spark plug fails, the vehicle will naturally stall. In this case, it is recommended to replace the spark plug. If it is inconvenient to replace, it can also be temporarily solved by cleaning the electrode and adjusting the length of the center electrode. In addition, the battery voltage ...

4. Sensor failure: Check whether all sensors and actuators work normally. The main sensors include throttle position sensor, oxygen sensor and crankshaft position sensor. Crankshaft position sensor has been replaced, check whether the oxygen sensor is poisoned.