Ask Zhixuan for advice on idling.

1, too much carbon deposit in the engine, too dirty throttle or too much carbon deposit in the fuel injector, these are the most likely causes of vehicle jitter. When the car starts, the fuel on the carbon deposit will be sucked into the cylinder by the engine and burned. Because the combustible mixture of the engine is high and low, the body will shake during cold start. Usually, as long as the throttle and other oil circuits are cleaned on time, this problem will not occur.

2. Ignition system failure: This is also an important reason for the body jitter at idle speed. If there is something wrong with the spark plug, high-voltage wire and ignition coil, the body of the starting car will shake. At this time, you can check whether there is too much carbon in the spark plug, and replace it with a new spark plug if necessary.

3. Jitter caused by unstable oil pressure: If the oil supply pressure of the oil pump is abnormal, the value of the air pressure sensor is inaccurate, which will also cause jitter. You can check the oil pressure at this time. If it needs to be replaced, it should be replaced in time.