How much is idle normal? How long a vehicle idles is considered normal

Normally, 800 to 1000 rpm but if the idle speed is too low, the start will be slow.

The idle speed is generally around 800 rpm.

Generally around 750 800 is normal, if it helps.

It depends on what series your car is.

Idle state refers to a condition in which the engine is operating when it is idling. When the engine is running, if the accelerator pedal is completely relaxed, the engine is idling. When adjusting the idle speed, the speed should not be suddenly high or low, otherwise it will cause early wear and tear on the engine, and it is best to go to the car maintenance department to adjust.

Idle speed means that the engine runs under no load, and only needs to overcome the frictional resistance of its own internal parts, and does not output power to the outside world. The minimum speed at which an engine runs smoothly is called idle speed and is one of the five basic operating conditions of an engine. Engines with good working performance generally have an idle speed of 550-800 rpm.

The idle speed can be adjusted by adjusting the size of the throttle opening, the amount of fuel supplied at the idle speed, etc. Generally speaking, the lowest engine speed is best when the engine is not shaking in the idle range and the acceleration performance is good.

Classify. Normal idling.

The vehicle starts the engine in the parked state, and the lowest speed at which the engine runs stably is called parking idle speed (the process of the engine changing from the cold idle state to the idle state when the engine reaches the normal operating temperature is called warm or hot car).

Forced idling. In the process of the car gearing, do not step on the accelerator pedal or release the accelerator pedal during driving, maintain the minimum opening of the throttle, and the engine speed and parking idle speed are consistent at this time, which is called driving idling.

Unstable idling. Unstable idling is the most common failure encountered in engine maintenance. If the diagnosis is not correct, it will prolong the repair time, reduce the work efficiency, and even make the car owner wait and move to another garage.

Idling is when you stop in place, don't press the accelerator pedal, and keep the engine running at about 800 rpm.

Short-term idling has no effect on the car, and long-term, such as more than 1 hour of idling, is not very harmful to the car, but there are the following two hazards:

1. It is easy to burn engine oil at idle. When idling, the throttle opening is small, and the vacuum inside the intake manifold is high, which is easy to suck the oil vapor into the intake manifold, and some of them are deposited inside the intake manifold to form a substance similar to carbon deposits, or coking. If you're low-speed or idle for long periods of time, especially turbocharged models, you'll find a puddle of oil in the intake manifold behind the throttle, but this will generally disappear after running at high speeds.

Second, it is easy to accumulate carbon at idle speed. When idling, the general mixture will be thicker, so the idle mixture is thick for a long time, which is easy to make the engine carbon, and low-speed driving stop-and-go is also, such as "one foot of the accelerator and one foot of the brake", one foot of the accelerator just raised the speed, and then the brake is again, the engine is in a situation where it will be thickened and the amount of fuel injected will be reduced, and it is also easy to make the engine carbon.

In general, long-term idling does not hurt the engine, the wear is very small, there is no need to worry about the engine problems, that is, it is more fuel-intensive, and then it is easy to consume oil and cause some carbon deposits. Generally, idling for ten hours is nothing, and some people forget to turn off the ignition and idle overnight, and then the fuel tank runs out of fuel and turns off.

Even if the idle speed is 10 hours, there is no need to do any remedy, the engine can be regularly maintained and changed oil, now the engine is not so fragile, idle for a few days will not be fine, and try to avoid idling for a long time in the future.