What are the reasons for the BMW 120's brake pedal being hard to press?
1 Answers
There are several reasons why the BMW 120's brake pedal is hard to press: Leakage or malfunction of the car's vacuum booster pump: The force applied to the brake pedal is amplified by the brake booster pump. If the brake booster pump fails, the brake loses its main power, making it difficult to press down. Lack of necessary maintenance on the brake system: Insufficient maintenance of the brake system can lead to excessive impurities in the brake master cylinder, poor sealing, failure of the vacuum booster pump, dirty brake fluid, or the formation of vapor lock due to mixing different types of brake fluid under heat. It can also cause leakage in the brake master cylinder or wheel cylinders, or air leaks in the air reservoir or pipe connections.