How to adjust the idle speed of the car

First, turn the plug clockwise until it stops, and then turn it counterclockwise for 3-3.5 turns. At this time, the position is almost the same. Then install the idle motor and turn the key to the end, that is, turn it to the ON position. At this time, the driving computer will automatically adjust the idle motor.

It takes about ten seconds to start the vehicle. If the idle speed is normal, the adjustment is in place. If the idle speed is too high, it means that the air intake is large, so it is necessary to disassemble it and rotate it counterclockwise for 0.5- 1 revolution, and then repeat the above actions. If the idle speed is too low or it cannot be started, it means that the air intake is insufficient. At this time, it is necessary to rotate the plug clockwise by 0.5- 1 turn.

Extended data:

The preconditions for adjusting idle speed are: normal engine temperature, proper valve clearance, normal ignition system, good sealing of all pipelines, full throttle opening and tight throttle closing.

The hazards of high idle speed are increasing fuel consumption, high engine working temperature and increasing machine wear. The hazard of low idle speed is that it is easy to turn off when starting. If you start it frequently, it will be bad for the engine and starter. In addition, if the idle speed is too low, it is very likely that the vehicle will turn off when driving, which is very dangerous. It is easy to accumulate carbon in the engine cylinder for a long time, which leads to weak acceleration.

References:

Baidu encyclopedia-idle speed