Engine jitter when xf is turned off.

When the engine is turned off, the reason of engine jitter is that the throttle valve is too dirty or the fuel injector has too much carbon deposit, or it is related to the aging of the engine foot. When the engine is working, the sound is stuffy, the exhaust is not smooth, the idle speed is unstable, the work is weak, the oil consumption rises, the water temperature and exhaust temperature rise abnormally, it is difficult to start, and the throttle is insensitive. All these phenomena are related to carbon deposition. If you think the car engine has the above phenomenon, you can drive to the 4S shop for testing first. Treatment of engine jitter when the engine is turned off;

1, dirty throttle will lead to untidy throttle closing or the idling stepping motor is stuck, both of which will lead to excessive idling of the engine, and the carbon deposit generated by the engine in the process of working will also lead to vehicle jitter, especially when starting the vehicle, the engine jitter will be more serious than usual, and sometimes even it will not be started at one time;

2. Therefore, when the vehicle shakes, the throttle valve and fuel nozzle should be checked first. If the throttle valve is found to be too dirty or the fuel nozzle has too much carbon deposit, it should be cleaned in time;

3. Car jitter is sometimes related to the aging of engine feet, which is actually the shock absorption system of the engine. If there is something wrong with the engine foot, it will cause jitter at idle speed, and the engine will increase the load due to turning on the electrical system, resulting in idling slip. In order to make up for the jitter caused by idling slip, the engine will automatically pull up the speed. When turning on the automobile electrical system, especially when starting the automobile air conditioner in summer, the engine will often shake;

4. If the jitter in idle state will not be reduced due to the operation of the compressor of the vehicle air conditioner, then this jitter is probably caused by the aging of the engine foot, and it is necessary to replace the engine foot in time.