The car has just started. What is the average idle speed?

Normal, this is a cold start, and the idle speed generally drops in 5- 10 seconds.

The idle speed of a car refers to a working condition. When the engine is idling, it is called idling, that is, the gear of the car is neutral. The engine speed at idle speed is called idle speed. Idle speed can be adjusted by adjusting the size of air door. Idle speed means that the engine is not working hard.

When the engine is running, if the accelerator pedal is completely released, the engine will be at idle speed. When adjusting the idle speed, the speed should not be high and low, otherwise it will cause early wear and tear to the engine, so it is best to adjust it in the automobile maintenance department.

Idle speed means that the engine runs with no load, and it only needs to overcome the friction resistance of its internal parts and does not output power to the outside. The lowest speed to maintain the stable operation of the engine is called idle speed, which is one of the five basic working conditions of the engine. The idle speed of an engine with good working performance is generally 550-800 rpm.

Idle speed can be adjusted by adjusting throttle opening and idling oil supply. Generally speaking, the minimum idle speed is the best when the engine does not shake in the idle speed range and the acceleration performance is good.

Extended data:

Keep the engine at a certain speed and listen for air leakage. If it is difficult to find out the location of oil leakage, you can apply a little oil to the middle and lower gaskets of the carburetor. The place where the oil is sucked in is the location of oil leakage, which can be eliminated by fastening screws or adding or subtracting gaskets.

Then screw in the throttle adjusting screw to increase the engine speed, then tighten the idle adjusting screw and gradually loosen it to see if the speed is stable; Then loosen the throttle adjusting screw slightly, so that the engine speed is gradually reduced and the operation is stable, that is, the fan blades rotate evenly, and the blade profile (400 r/min) can be distinguished.

If the adjustment fails, check the oil level from the inspection hole on the carburetor. If the oil level is too low, please adjust it. If all inspections are in good condition, continue to check the wiper tube and intake and exhaust manifold for cracks and air leakage. Remove the carburetor and blow the idle metering hole and idle air metering hole with compressed air. If it works normally after reassembly, the metering hole is blocked. References:

Baidu encyclopedia-idle speed