Symptoms of Brake Booster Failure in Cars

A car's brake booster uses the engine's vacuum to strengthen the force of a driver pushing his foot on the brake.

It is located between the brake pedal & the master cylinder, and when the brake is pressed, the booster amplifies the force applied by the driver.

When the booster malfunctions, then the driver has to apply a lot of force to depress the brake pedal in order to stop the car.

All modern cars come equipped with a brake booster and it is important to the functioning of the power brakes at all times.

Here are the tips, which will help you in handling the brake booster failure in your car.

Brake pedals fail

A driver first detects the brake booster issue when holding the brake pedal while starting the car.

This indicates the brake booster suffering from a fluid leak, due to a worn out car hose, automobile valve, or car piston.

Doing a diagnostic test will determine the exact faulty component responsible for this brake booster issue.

Vaccum failure during acceleration

If the vehicle suffers from a vacuum failure when the engine accelerates then it indicates that something is wrong with the check valve.

If the problem persists after the check valve is replaced then you must replace the brake booster of your car.

Brakes feel spongy

As the problem with the vacuum brake booster increases, the air bubbles will progressively move down the brake lines & to the brake themselves.

This causes a reduction of pressure inside the brake lines and can cause the brakes to be applied softly.

While driving, you will feel as if the brake pedal is spongy, and the brakes will also take longer to stop the vehicle.

Miscellaneous symptoms of booster failure

If the brake pedal doesn't return completely to its original form, then it indicates that the brake booster spring has broken.

If you hear abnormal sounds when you apply the brake, it might be related to the malfunctioning of the brake booster push rod.

The worst case scenario happens when the vacuum brake booster check valve completely breaks and leads to a complete brake system failure.

Conclusion

The braking system of the vehicle is the most important part to be related to the safety of the driver & occupants.

The vacuum brake booster check valve is an integral part of your car's braking system and acts as a safety feature.

If you experience any of the above-discussed problems, then immediately take your car to the nearest automotive repair shop.

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