Power brakes involve the use of a master cylinder and booster to improve the effectiveness of a car's braking system. By creating an air vacuum within the booster, a power brake can magnify the ...

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.

Vacuum leaks can develop in many locations, including the intake manifold, throttle body evaporative emissions system, power brake booster, and several other places, because some vehicles have a ...