After the cold car hits the fire, idle and turn off the fire. What happened?

There are many reasons for the unstable idle speed of automobiles, such as air leakage in the intake system, low fuel pressure, air filter blockage, atomized oil leakage from the fuel injector, improper idle speed adjustment, poor spark plug operation, air flowmeter failure and so on.

The idle speed of the car is mainly controlled by the small opening of the throttle or the bypass passage. When the engine is idling, the throttle valve is completely closed or there is only a small gap. Under the condition of stable idle speed, the idle speed control of the engine adopts closed-loop control. In other words, the throttle opening or bypass passage is opened according to the setting of the computer. Idle instability caused by carbon deposition in the throttle can generally be solved by cleaning the throttle.

Extended data:

Precautions:

1, carefully patrol around the vehicle, and pay attention to whether there are obstacles under the vehicle and around the body. The engine needs to be warmed up when the cold car starts, and the warm-up time depends on the temperature. Generally, it is required to restart after the idle speed returns to normal. Be sure to fasten your seat belt and see if the driver's seat and rearview mirror are in the right position. If not, adjust it.

2. When adjusting the rearview mirror, the car body is in a natural driving state.

3. Put the scene in the center of the indoor rearview mirror, revealing a small part of the rear of your vehicle, so as to help judge the distance between the car body and the position of the rear car.

4. Adjust the outdoor rearview mirror so that the horizon is in the horizontal center of the rearview mirror, and display a small part of its own body.

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