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What Causes a Car to Fail to Start and the Brake Pedal to Be Hard to Press?

1 Answers

VanIvan

07/28/25 2:52pm

When a car fails to start and the brake pedal is hard to press, it is usually due to a malfunction in the vacuum booster pump. Solutions for vacuum booster pump failure: The vacuum booster pump is a component designed to provide assistance, enabling the driver to press the brake pedal with ease. Upon pressing the brake pedal, the master cylinder uses brake fluid to activate the wheel cylinders, which then push the brake pads to clamp the brake discs, thereby slowing down the car. The wheel cylinders contain multiple pistons that facilitate this action. Therefore, if the brake pedal becomes hard to press, it is essential to promptly visit a vehicle repair facility to inspect the vacuum booster pump for leaks, wear, or damage and proceed with necessary repairs or replacements. Maintenance of the vacuum booster pump: The brake fluid within the vacuum booster pump requires regular replacement. Prolonged neglect can result in reduced braking efficiency and longer stopping distances. Brake fluid is prone to absorbing moisture; when its water content reaches 3%, immediate replacement is necessary. After replacing the brake fluid, it is also crucial to bleed the air from the brake system lines. Regularly inspect the vacuum booster pump for any signs of damage or leaks and ensure proper lubrication.

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