What Causes the Brake to Be Extremely Hard and Difficult to Press?
1 Answers
There are several reasons why the brake may feel extremely hard and difficult to press: 1. Related to pressing the brake before shutting off the engine; the car's braking system operates at its maximum efficiency when the engine is running, and the brake booster is the key component that amplifies the force applied to the pedal. When the engine is off, the brake booster stops functioning. Typically, pressing the brake pedal three times will deplete its remaining vacuum force, making the brake feel very hard due to the lack of assistance. 2. Brake booster air leak: If you haven't pressed the brake pedal after turning off the engine, or if you notice the brake pedal is hard to press while driving, it is likely due to a malfunction in the brake booster. This could be caused by a vacuum tube leak or blockage in the brake booster.