Tips Sahabat

Easy Tips to Identify Symptoms of Car Brake Booster Leak

09 April 2025
Gejala Kebocoran Booster Rem

Cars have become the primary mode of transportation for most Indonesians. Unfortunately, many people still often neglect the condition of their vehicles, including the brakes. Here is information about the symptoms of a car brake booster leak.

Brakes are an important part of a car that functions to stop the vehicle for safe driving. There are two types of brakes, namely hand brakes and foot brakes. Although there are already two types of brakes, current technology has added a booster to car brakes.

The function of the brake booster in a car is to provide additional force so that the driver does not need to press the brake pedal hard. The presence of a booster on the brakes provides relief to the car driver.

Symptoms of a Car Brake Booster Leak

So what happens if the brake booster has a leak? Then the driver will definitely need extra force to press the brake pedal. Here are the symptoms of a car brake booster leak below.  

1. Hard Brake Pedal

One tip to identify the symptoms of a car brake booster leak is to press the brake. If the brake pedal rises slowly, then the brake booster is still safe and does not have a leak.

Conversely, if the brake pedal rises immediately and feels hard after being pressed, then you should check the condition of the car's brakes. It is strongly suspected that your car's brake booster is leaking.

If the brake pedal feels hard and the booster is indeed leaking, then the condition of the car's brakes will not be optimal when used. You will need to press the brake pedal hard for the car to come to a complete stop.

2. Hissing Sound When Brakes Work

Another symptom of a brake booster leak is the emergence of a hissing sound when the brakes are applied. Generally, a good brake condition will not produce any sound when used.

However, in the case of a leaking brake booster, a hissing sound will come out when used. The main cause is usually a leaking vacuum hose, allowing air to escape through that vacuum hose.

3. Car Engine Becomes Unstable

The brake booster works when the car engine is running. This is because the brake booster has a vacuum hose connected to the engine's intake manifold. Therefore, when the brake booster works well, the engine's intake manifold can also function properly. The car engine remains stable during use.

Conversely, if there is a leak in the brake booster, it will automatically cause a leak in the intake manifold. As a result, the vacuum hose does not work optimally and the car engine becomes unstable.

The three symptoms above are the most common signs that often occur in a leaking brake booster. Through these three symptoms that are quite easy to identify, you as a driver should immediately take the car to a workshop to have the brake booster repaired.

Also Read: 3 Bad Habits That Make Car Brake Pads Wear Out Quickly

The workshop staff will explain the cause of the brake booster leak in your vehicle. For example, there may be a leak in the vacuum hose, a damaged rubber membrane, engine oil entering the brake booster, or a lot of dirt clogging the hose.

Well, you have read information about the symptoms of a leak in the car brake booster. Although cases of brake booster leaks are quite rare, it is not impossible for such incidents to occur to you.

Therefore, do not forget to always check the condition of your car regularly to know which parts need to be repaired. You can directly contact us, Daihatsu Service Care to learn more about matters related to your car. Including understanding the symptoms of a car brake booster leak.

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