A brake booster's goal is to offer power assistance to the braking system, which means you don't have to apply a lot of energy to get the brakes to engage. The brake booster, which is placed between the brake pedal and the master cylinder, employs a vacuum to overcome the braking system's fluid pressure.
The car should not be driven if the brakes are not working correctly. Because the brake booster is such an important element of the braking system, keep a watch out for the following 8 symptoms so you can have it fixed as soon as possible:
1. Hard brake pedal - An exceedingly difficult-to-push brake pedal is the major symptom of a faulty brake booster. This problem may arise gradually or all at once. Furthermore, after pressing the brake pedal, it will not return to its previous position. Contact a skilled technician to get your brake booster changed as soon as you find your brake pedal is difficult to engage. Brake booster defects must be fixed as soon as possible; driving a car with a faulty brake booster is dangerous. When you run a MOT history checker online, this will be plainly indicated as a reason for MOT test failure.
2. Longer stopping distance - If you have a hard brake pedal, you may find that the car takes longer to stop. This is due to the fact that you are not receiving the necessary power boost to effectively stop the car. In all sorts of weather, a greater stopping distance can be dangerous since it makes your vehicle unreliable. As soon as you discover this problem, have it checked out by a technician. Another typical reason for a MOT test failure is related to the braking system when you 'check my MOT history ' online.
3. Engine stalls when brakes are applied - When the brake booster fails, it might pull too much suction from the engine, causing the engine to stall. This happens when the brake booster's diaphragm breaks, allowing air to bypass the seal. After that, the brakes are applied, the engine seems like it's about to stall, and the idle might decrease. A stalled engine can cause major problems in addition to diminished braking efficacy. Check your car's MOT status and have a mechanic rectify the problem, since this will result in a MOT failure.
4. High brake pedal position - The brake pedal can travel less than normal, or it could take much longer to return to its former position once you take your foot off it. One of these issues might be caused by an imbalance in the vacuum chambers of a failing vacuum brake booster.