There is no pressure when the brake pedal is pressed, what is the reason why the brake is not workin

This fault is most likely due to a malfunction of the brake master cylinder, resulting in no pressure inside the brake system, so there is no pressure when the brake pedal is pressed. There is also a fault of oil leakage in the brake system, which is causedBrake fluidIt's all leaking, so there's no pressure on the brake pedal.

Another point is the brake pads.

The thickness of the brake is worn to the limit, so the brake travel is very long, so you feel that there is no pressure on the brake, check the thickness of the brake pads, if it is less than 3mm, it needs to be replaced.

As the name suggests, it is a mechanical braking device that can slow down the speed of the car, also known as a reducer.

To put it simply: the car brake pedal is on the steering wheel.

Next, when the brake pedal is pressed, the brake lever is pressurized and transmitted to the brake pads on the brake drum to jam the brake wheel wheel, causing the car to slow down or stop running.

The manual brake of the car is next to the gear shift and is connected to the brake bar. Bicycle brakes are also common, which are decelerated by rod brakes fixed to the frame or disc brakes.

The braking effect is significantly reduced, often the brakes are stepped on and can not be stopped immediately, and continue to walk far forward to stop, this may be the car's braking system failure, this is the most terrible fault in driving, often easy to form traffic accidents, to do emergency treatment, generally to see whether the brake pads are aging, whether the brake fluid is deteriorated, whether the tires are seriously worn.

Summary. If there is an ABS pump, it is caused by a problem with the ABS pump and needs to be replaced, if there is no ABS pump, it has a distribution valve in the engine compartment, that is, the distribution valve is broken and needs to be replaced.

There is no pressure when the brake pedal is pressed, what is the reason why the brake is not working?

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In this case, it is necessary to check the brake master cylinder, as well as the position of the brake oil hand hand pipe connected to the brake sub-cylinder, to see if there is any oil leakage with the bend, if it does not appear, then it is necessary to check the brake vacuum booster pump to see if there is a problem, and it is necessary to check the ABS pump, mainly to check these aspects.

Geely King Kong brakes exhaust air without pressure.

There is no pressure in the exhaust air, so you need to check the brake master cylinder to see if there is a problem.

The brake master cylinder has been replaced with a new one, and two bottles of brake fluid have been used, and it is still the same, and there is no pressure to exhaust the air.

One foot to the end. If there is an ABS pump, it is caused by a problem with the ABS pump and needs to be replaced.

There was no oil leakage either.

Without ABS pump.

There is no ABS pump, that is, there is a distribution valve in the engine compartment, and this distribution valve is broken and needs to be replaced.

Is it just a dispensing valve from the master pump? Yes.

Emergency braking generally refers to the same braking distance, from pressing the brake pedal to stopping the car more force than normal, generally indicating that there is a problem with the vacuum booster system (commonly known as vacuum bag). First of all, let's see if the braking system can be used normally. If it can be used normally, the brake pedal is still very hard.

It depends on whether the vehicle's braking system is equipped with an anti-lock braking system, and if so, check whether it is working properly. Also, check whether the vacuum brake booster pump is leaking, check whether the brake oil cup of the vehicle is short of brake oil, and check whether the brake ejector rod of the brake master cylinder is deviated. The brake pedal is difficult to press, and the brake fails:

1。First, it has to do with you stepping on the brakes before turning off the engine; The braking system of the car works best when the engine is working, and the brake booster pump is the driving force behind the vehicle's braking, through which the force of our pedal is amplified. When the engine is turned off, the brake booster pump also stops eating.

Most of them will use up the remaining vacuum force when they press the brake pedal 3 times. Of course you think the brakes are hard, but I don't think it helps. 2.

Solution: In this case, you only need to restart the engine and try to press the brake pedal firmly to restart. After the engine is working, the brake booster pump can work again, and the natural brake pedal returns to normal.

3.Secondly, the car's brake booster pump is leaking or malfunctioning. If you don't press the brake pedal after the car is turned off, or if you find it very difficult to press the brake pedal while driving, it is likely that the brake booster pump is faulty.

It may be caused by leakage or blockage of the vacuum tube of the brake booster pump; 4.Solution: In view of such a situation, if you find such a situation before driving, for safety reasons, you must not continue driving.

It's better to take it to the repair shop for maintenance. If you find out while driving, don't panic. The first thing to do is to slow down and stop.

You can try pedaling a few times to see if you can retract the brakes. If you press hard, you can generally still exert braking power.

The brake is too hard and the reason why you can't step on it: the vacuum booster pump of the car leaks or fails, you must know that the force of pressing the brake pedal is increased by the brake booster pump, if it fails, the brake will not be assisted, then it will be difficult to step on.

After the ignition was turned off, he stepped on the brakes, which is also related to the brake booster pump. The brake booster pump will only continuously produce vacuum when the engine is working, and when the engine is not working, it can only rely on the little vacuum power that has been left before, and it is generally gone after a few steps, but it will be restored after this start, and it is not a failure.

1. Step on the brake pedal several times to make the probability of braking force recovery larger, once you encounter an accident on the brake, you must know how to repeatedly press the brake several times, which will put pressure on the braking system with air in the oil pipe, and then with repeated pressure, there is a chance to make the braking force recover.

2. Turn on the emergency lights to remind the surrounding vehicles that at the critical moment of brake failure, most car owners will only think about how to slow down the car, but forget to notify the surrounding cars. So while slowing down, turn on the lights and horn to tell the vehicle next to you to be careful, and then call the police for help.

3. If it is a mechanical handbrake, the handbrake should be pulled up slowly to gradually increase the strength of the brake. Because if you suddenly pull the handbrake vigorously, the rear wheel locking will cause side slip and be more dangerous.

If you have an electronic parking brake, you can also operate it, but you should pay more attention to the steering wheel at this time. At the same time, gradually downshifts are used to limit the speed of the vehicle by allowing the braking effect of the engine itself.

4. Friction deceleration pay attention to whether there are objects that can collide on the left and right, remember not to hit it headlong, hold the steering wheel with both hands, and use multiple slight Liang Min collisions to forcibly reduce the speed of the vehicle.

The reason why the brake is suddenly very hard and cannot be stepped on: 1. It is related to stepping on the brake before turning off: the brake system of the car can play the maximum role when the engine is working, and the brake booster pump is the driving force behind the braking of the vehicle, and the force of pressing the pedal is amplified through it.

When the engine is turned off, the brake booster pump will stop working, and generally pressing the brake pedal 3 times will use up its remaining vacuum force, so I feel that the brake is very hard is actually missing its help. Solution: In this case, just restart the engine, and then try to press the brake pedal hard to restart, and after the engine works, the brake booster pump can work again, and the natural brake pedal will return to normal.

2. The brake booster pump of the car leaks or malfunctions: if you do not step on the brake pedal after the car turns off, or find that the brake pedal is difficult to press while driving, then it is likely to be caused by the failure of the brake booster pump, and it may be caused by the leakage or blockage of the vacuum pipe of the brake booster pump. Workaround:

In view of this situation, if this situation is found before driving, then do not continue driving for the sake of insurance, and send it directly to the repair shop for maintenance. If you find it while driving, don't panic, the first thing to do is to slow down to a stop, and try to press the pedal a few times to see if you can restore the brakes.

The brakes become very hard, and there are several cases. 1. Parking for a long time. 2. Step on the brakes a few times after turning off the ignition.

1 and 2, just start the engine. 3. Low-speed braking, automatic start-stop and stop-off, and then it can't start, at this time, it will also be very hard, and you need to hang the P gear to restart. The landlord's description is not like 3, or the landlord did not pay attention, and the description is inaccurate.

3 This question is scary, so.

Nowadays, most cars use vacuum booster pumps to help the brakes, so that we do not need to use a lot of force when we apply the brakes. The vacuum of the vacuum-booster pump is applied to the engine intake duct.

Therefore, when the engine is turned off and the brakes are pressed several times, so that the only vacuum in the booster pump is gone, then the brake pedal will be very hard and cannot be pressed down the next time. At this time, you need to press the brake pedal with a little more force, and then press the ignition switch to start the engine. After the engine starts, you can clearly feel the brake pedal sinking, because the engine intake pipe has formed a vacuum, and the vacuum booster pump has also begun to provide assistance.

However, if the car is a hybrid Accord or Alfa Romeo, which uses electronic assistance, and the brakes cannot be pressed and cannot be started, it is necessary to check whether the carpet or other debris is stuck on the brake pedal. Otherwise, it is possible that the brake pedal cannot be pressed due to the failure of the electric power assist system.

I'm also 19 models, and 1 year later, the winter began to feel obvious, and I used to be able to step on it without opening it for three days, but now I can't step on it for 3 hours. I went to a few 4S shops and said that the car was like this, and it couldn't be stepped on when the engine was turned off (I still have the common sense that the vacuum booster pump can be guaranteed to step on it) In the end, only one of the masters told the truth, maybe the rubber parts were a little leaky, but.

Or go to the repair shop to repair and check, brake failure will cause an accident.

The brake pedal does not move. Go to the four-S store and ask about the situation. Is there a problem with the shipowner, and the brake is a big deal, so you must pay attention to it?

This happens because the REAL air booster pump is damaged, so the REAL air booster pump is unable to power the brake pedal. In this Huizhou, the driver pressed the brake pedal very hard. When this happens, it is advisable to replace the vacuum booster pump.

The braking system is related to the driving stability and safety of the car, and cannot be careless.

When replacing a real air booster pump, be sure to use original parts.

The automotive braking system is mainly composed of a vacuum booster pump, a master cylinder, a slave cylinder, brake pads and brake discs.

After the driver presses the brake pedal, the master cylinder pushes the brake cylinder through the brake fluid, and the brake cylinder pushes the brake pads to clamp the brake disc, slowing down the car.

The brake cylinder is what we usually call a brake caliper, and there is a piston in it.

Brake pads, forelimb shelters and brake discs are consumable parts that need to be replaced regularly. As the mileage increases, the brake pads and discs wear out.

Normal maintenance will ignore the brake fluid. In fact, the brake fluid also needs to be replaced regularly, and the brake fluid is very important for the braking system.

Brake fluid is a fluid that absorbs water easily. If the water content of the brake fluid is too high, the braking force will be reduced and the braking distance will be extended.

Therefore, when the moisture content of the brake fluid reaches 3%, it needs to be replaced immediately.

It is recommended to check the moisture content of the brake fluid at each service.

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