How to Tell If the Brake Booster on a Ford F150 Is Bad?
How to Tell If the Brake Booster on a Ford F150 Is Bad? Your Ford F-150 comes equipped with a power brake system, which includes a booster, vacuum hose and fittings. This system greatly increases the pressure you can apply to the brake pedal when slowing or stopping your pickup. After years of service, though, the vacuum hose connecting the engine to the booster may harden, crack or swell, and finally leak. Also, the booster internal diaphragm may rupture or some other component may wear out and render the unit inoperative. Know the condition of the brake booster in your F-150 now by performing two simple tests at home, without the need to use any tools. Instructions Apply the parking brake in your F-150, but do not touch the brake pedal. Start and idle the engine in your F-150 without touching the brake pedal. Let the engine idle for one minute, turn off the ignition and wait for another minute before proceeding on to the next step. Depress and release the brake...