Most brake boosters run on a vacuum produced by the engine. The cause of booster failure can be as simple as a loose vacuum hose or a ruptured diaphragm that requires component replacement.

3. Loss of power assist from the power brake booster is another cause of poor braking performance. It can occur due to a loss of engine vacuum, or deterioration of the vacuum brake booster diaphragm.

Often times, brake booster issues can be traced back to other problems within your braking system, such as worn brake pads or a brake fluid or vacuum leak. If you are concerned you might have a ba ...