Is the idling jitter of automobile engine normal?

Abnormal vehicle idling jitter may be caused by serious carbon deposition in the engine, ignition system problems, unstable hydraulic pressure, aging engine parts, etc. It must be repaired in 4S repair shop as soon as possible. The common causes of car bumps are dirty throttle and excessive carbon deposition at the fuel injection port. If there is too much carbon in the engine, the mixture of cold start will become too thin and it will be difficult to start. It is easy to ride until the gasoline is saturated, and then it is sucked into the cylinder for combustion, resulting in engine idling jitter. The working conditions of spark plugs, high-voltage lines and ignition coils also need to be checked, and problems such as poor ignition system and spark plug flashover can also lead to idle jitter. Hydraulic instability can also lead to idle jitter. Even after relevant cleaning and replacement, it is necessary to check whether the fuel supply pressure and intake pressure sensors are normal if the vehicle body is found to shake at idle speed. Abnormal oil supply pressure of oil pump, numerical error of intake pressure sensor and poor action will all lead to body jitter. The aging of engine parts and mechanical paw pads is also related to car bumps. The feet of the engine can absorb the vibration during operation, and if there is a problem, these vibrations will be transmitted to the cab, resulting in jitter during idling.