When the car was driving normally, there was a sudden meal.

Usually it is caused by five reasons, the first is dirty throttle, the second is blocked fuel nozzle, the third is too much carbon deposit in the air inlet, the fourth is damaged spark plug, and the fifth is damaged ignition coil. Check these positions in turn to determine the reason.

Generally speaking, the engine oil circuit, ignition and air intake systems are all faulty. First of all, you can check whether you have added the wrong gasoline. If high-grade gasoline is added with low-grade gasoline, there may be a situation of weak acceleration, which may lead to a decrease in engine power or an increase in fuel consumption. Then you can check the oil system. If the engine oil is insufficient for a long time, it will easily lead to insufficient power and increased fuel consumption. The fault of ignition system may be poor ignition of spark plug, dripping water or atomization, which will affect engine acceleration.

Causes of jitter of traditional fuel vehicles

Too much carbon deposit. Generally, the phenomenon of vehicle body jitter at idle speed is due to carbon deposition in the engine, throttle and nozzle, which is the biggest reason for engine jitter. Carbon deposits adsorb gasoline, which will cause the concentration of mixed gas in the cylinder to rise and fall, especially during cold start. Pay attention to check the cleanliness of the throttle oil circuit on time.

Oil supply system. Unstable oil pressure causes unstable mixture concentration, leading to jitter and unstable idle speed. First, consider replacing the gasoline filter. After all, the filter element may be blocked if used for a long time. Then check the oil pressure that does not pass through the gasoline filter. If it is not normal, it may be an oil pump problem.