Is it bad for a car to run at idle speed often

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 makes it easy to suck oil vapor into the intake manifold, and some are deposited inside the intake manifold to form a substance similar to carbon deposits, or coking. Prolonged low or idle speeds, especially in turbocharged models, will find a puddle of oil in the intake manifold behind the throttle, but this oil will generally disappear after running 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 much, the wear is very small, and there is no need to worry about the engine problems, that is, it is more fuel-intensive, and then the engine 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.

When the car is idling, the engine is also in the state of working fuel injection, and the combustion of gasoline is not sufficient compared with driving, which will lead to the generation of carbon deposits, once the carbon deposits are excessive, not only increase fuel consumption, but also increase unnecessary cleaning costs.

If idling at the time of driving. It is possible that there is no out-of-gear phenomenon and there will be no damage to the car.

Reduce engine power.

Increased fuel consumption. Difficult to start cold.

If the combustion chamber has serious carbon deposits, it will also detonate! There is a loud acceleration at low revs, which causes damage to the piston and crankshaft.

Emissions exceeded.

That's harmful, and the car should run at high speed.

The hazards of idling to the car are:

1. Long-term idling is easy to cause carbon deposition: the car is in a state of concentrated fuel injection when idling, that is to say, the car at idling, the valve is very small, and the fuel injector will spray a high concentration of oil to ensure the operation of the engine, so the idle speed itself is more likely to cause carbon deposition than the car running or running at high speed, and the engine carbon deposition will definitely be more powerful when idling for a long time.

The hazard of carbon deposits: due to the carbon deposits on the throttle valve that change the position of the throttle, when the engine is idling, the computer receives this error signal and calculates the wrong fuel supply, which increases the fuel consumption of the vehicle.

And the carbon deposition on the throttle body will cause acceleration lag, idle instability, and the carbon deposition on the valve occupies the air intake space on the one hand, so that the inflation efficiency is reduced, and the power of the car is directly affected; On the other hand, the dry carbon deposit will also adsorb a large number of gasoline molecules in the combustible mixture, destroy the original mixture concentration;

This can lead to difficult cold starts, higher fuel consumption, and more severe carbon deposits that cause the valves to be less tightly closed. In addition, the unequal accumulation of carbon deposits on the fuel injector affects the atomization of the fuel injection, resulting in a mismatch between the cylinders and may also cause significant engine shaking.

2. The electronic system is also doomed: most of the electronic systems in the car are used for entertainment, such as large screens, CDs, etc., and these electronic systems enrich the experience of everyone when driving. All of these electronic systems are in normal working order when the car is operating normally.

When the car is not turned off after getting out of the car, these electronic systems will go into standby mode because they have not received an operating signal for a long time. At this time, although the screen is still on, other parts such as the CPU will enter sleep mode. This is actually an anomalous mode of operation.

Therefore, after re-entering the car, some instruments or electronic devices may malfunction, black screen or freeze, or even display garbled characters. The reason for this is that these systems can have software glitches during wake-up after a long hibernation, causing problems.

If this happens, it is recommended that everyone calm down first. Turn off the vehicle, wait a few minutes before starting the vehicle, and if these systems are not back to normal, the only way to do so is to go to a 4S shop for repairs.

Carbon deposits will increase, nothing else, now the car engine technology is very good.

1. In fact, there is not much harm, and it can even be ignored. There are two points of impact, one is the waste of fuel, which is the most intuitive impact. The fuel consumption of the vehicle is about 2 liters per hour when idling, and the fuel consumption is 16 liters for 8 hours at idling, which is more than 100 yuan.

That is, if you idle overnight, the fuel gauge will go down a lot, and a hundred yuan will be gone.

2. Second, a certain amount of carbon will be generated. Idle speed due to the low engine speed, low intake efficiency, combustion itself is not very complete, easy to produce carbon deposits. More importantly, the carbon deposition cannot be discharged, and it will accumulate in the cylinder and air intake all the time, and the carbon deposition speed is significantly accelerated.

If you have ever seen a dismantling cleaning intake, assuming that the cleaning is idling, as long as you put a little throttle on the gas after cleaning, the exhaust pipe will emit a lot of black smoke. This is that the cleaned carbon deposits are still retained in the cylinder, intake duct, and exhaust pipe, and are not discharged. Therefore, idling all the time will also have this effect, and the carbon deposits will not be discharged.

The hazards of vehicle idling for a long time: 1. Cause incomplete fuel combustion, increase fuel consumption, when the engine speed is very low, the intake vortex becomes weak, so that the fuel atomization is poor, resulting in incomplete fuel combustion; 2. The engine vibrates at idle speed for a long time, which is easy to cause the vehicle's braking device to loosen, resulting in the vehicle slipping on its own; Cong Hongyu 3, easy to cause carbon deposition in the engine, at idle speed due to the low pressure of the engine lubricating oil, so that the lubrication condition of the motion pair deteriorates, the unburned fuel flushes the cylinder wall, the vortex of the intake air is weak, and the fuel combustion is not completely easy to seep and roll to form carbon deposition in the automobile engine.

The effects of a car idling for a long time on the car are as follows:

1. If the engine is idle for a long time, the throttle opening will be very small, and the injector will spray a high concentration of oil to ensure the operation of the engine, so if the engine is idle for a long time, the engine carbon deposition will definitely be more serious. Carbon deposits in the engine have a direct impact on the power and comfort of the car.

2. In the case of idling, the fuel consumption of the car is quite large. According to the test, the fuel consumption of three minutes of idle is equivalent to the fuel consumption of one kilometer, that is, two hours of idling consumes almost 2-3 liters of fuel.

3. When the engine is idling, because the temperature and pressure in the cylinder are relatively low, the preparation time for fuel ignition is prolonged, and the tightness of the cylinder decreases at this time, so it is easy to produce a knocking sound and shorten the service life of the engine.

4. Long-term idling, the concentration of the engine mixture is too high, the oxygen content in the exhaust gas is low, and the mixture without complete combustion is burned at the position of the three-way catalytic converter, which is easy to burn out the three-way catalytic converter.

Explanation of car idling:

Car idling refers to a working condition, and engine idling is called idling. When the engine is running, if you do not let go completely and the accelerator pedal is not pressed, the engine will idle at this time. The increase in time is a long idle speed.

The idle speed is too high, the fuel is expensive, and the engine operating temperature is too high. Increased wear and tear on the machine

1. When the engine water temperature is low, the air conditioner is turned on, and the engine voltage is low, the ECU program design should appropriately increase the idle speed, which is normal, if the engine water temperature is normal, and the idle speed is high without turning on the air conditioner, it means that the system is faulty, which may be the electronic control system or the mechanical system failure.

2. If there is a mechanical failure that causes high idle speed, we must pay attention to check whether the intake pipe is leaking, the vacuum pipe is falling off, damaged, and the intake pipe is damaged (the intake manifold of Volkswagen engine is mostly rubber pipe). Because the engine intakes very little air at idling, if there is an air leak entering, it will cause high idle speed.

3. Injector loophole may cause excessive fuel supply, resulting in higher than normal idle speed.

4. For the EFI vehicle with fuel vapor** system, the fuel vapor should not enter the intake pipe when idling, if there is fuel vapor sucked into the intake pipe when idling due to system failure, the idle speed is higher than the normal value.

5. For the high idle speed after starting after cleaning the throttle body and idle control valve, this should give the computer a learning process, because the engine idle speed will drop because the throttle and idle control valve are dirty, and the ECU will control the idle control valve or throttle opening to increase the air intake in order to stabilize the idle speed, so as to stabilize the idle speed. After cleaning, the ECU also controls the air intake according to the original opening, and the engine idle speed will increase.

There is a misunderstanding that you think that doing anything while idling will hurt the car, such as idling to turn on the air conditioner, especially in the hot summer, otherwise sitting in the car is a sauna. Some people will think that this doesn't hurt the car, right? Not necessarily, depending on your situation, generally speaking, idling the air conditioner is not a big problem.

Commuting to and from work, there are also cases where the water is blocked, and it is those old cars that really can't idle for a long time, because their engine heat dissipation technology is relatively backward, and long-term idling will lead to poor engine heat dissipation, which is easy to cause the water temperature to be too high.

It is said that there is harm to the battery, this statement is not entirely correct, because generally speaking, only the engine will be charged when the engine is working, so that the life of the battery will not be lost, and the battery itself will be lost with use and time.

It is also said that carbon deposition is inevitable to increase the impact of carbon deposition, as long as the engine is running, carbon deposition will be generated, so the idle speed is not an exception.

Idling has basically no effect on the operation of the car, the only thing that has an impact is on your wallet, because idling it is very fuel-intensive...

There is definitely damage, the increase in fuel consumption, increasing the load on the engine will cause wear on the engine, and it will also increase the wear of the belt.

Long-term idling has an impact on the carbon deposit of the engine, that is, it is easier to accumulate pure carbon in the cylinder.

It's okay if you turn on the heating.

If the air conditioner is turned on at idle speed, the battery will lose power. If the fuel consumption is high, it seems that if the air is not well ventilated, it will be difficult to breathe due to carbon oxides or carbon monoxide in places with poor air circulation.