What is the problem of idle jitter and high-speed jitter after long-distance running?

What is the problem of idle jitter after long-distance running? Causes of idling jitter after running at high speed: the throttle is too dirty, the vacuum tube leaks, and the fuel injector deposits too much carbon. When there is too much carbon deposit in the engine, the gasoline sprayed by the injector will be absorbed by a large amount of carbon deposit during cold start, resulting in too lean mixture during cold start. In this case, it is easy to hit the car only if the gasoline absorbed by carbon deposits reaches saturation. The lower the temperature, the more oil is needed for cold start, and the existence of carbon deposit will affect the smooth start. Another reason is the poor oil. Because of driving at high speed for a long time, the engine oil will become thinner and thinner, which will not play a lubricating role and cause the engine to shake. It is suggested that the owner change a bucket for synthetic engine oil.

Million car purchase subsidy