If there is an internal pressure loss issue within the brake master cylinder, you might notice a significant softening when pressing the brake pedal, even pressing it all the way down won't produce the expected braking effect. This softening may be due to an oil leak at the connection between the brake master cylinder and the vacuum booster or the limit screw, causing the brake system to lose its original pressure support.
Additionally, there may be a deviation from actual performance during braking, where the vehicle exhibits abnormal driving deviation when braking. In such cases, the driver may find it difficult to accurately control the vehicle, increasing the driving risk.
If there is an internal pressure loss issue within the brake master cylinder, the rebound speed of the brake pedal may become slow or even fail to rebound completely. This can cause great inconvenience and danger to the driver, as the inability to promptly release brake pressure could lead to accidental incidents.
The symptoms of internal pressure loss in the brake master cylinder include a softening brake feel, deviation during the braking process, and abnormal rebound speed of the brake pedal.
