What Causes the Brake Pedal to Slowly Sink at Idle?
1 Answers
If the brake pedal continues to sink downward after braking, possible causes include a broken pedal spring, brake master cylinder leakage, damage to the brake master cylinder, or a faulty vacuum booster pump. Below is an analysis of several common brake failure causes: 1. Steering wheel deflection during braking: If the steering wheel turns to one side when the brake is applied, this indicates an imbalance in the force applied by the left and right brake calipers to the brake pads. However, this issue is not easy to detect because the brake disc rotates at a relatively high speed. 2. Weak braking: The cause of weak braking is likely due to a loss of pressure in the transmission pipeline that provides pressure. This situation is difficult to resolve on your own. It is best to drive the car to a repair shop for inspection. Otherwise, the consequences could be severe. 3. Brakes becoming too hard or too soft: If the brakes become too hard, it is likely due to a vacuum booster failure. This occurs with prolonged brake usage. Many components need timely inspection and replacement. Brakes becoming too soft is a more significant issue. It reflects insufficient hydraulic pressure in the calipers or master cylinder, possibly due to oil leakage, or a fault in the brake disc or brake pads. There may also be air leakage into the brake lines.