Brakes?
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1st Gear
Joined: May 2020
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Brakes?
So I recently bought a 79 with the l82 and it was driving fine for about 3 weeks then I went to drive it and the brakes would not work for anything. When the car is off I have a ton of pressure but as soon as it starts I lose it all. I have disconnected the vacuum line from the brake booster and get full pressure, however the car will not stay on with it disconnected. So would the booster be bad? Or could it be my master?
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From: New Or-leens Loo-z-anna
"It still Runs" website:
Park the vehicle and allow the engine to run at idle for a minute or so. Push the brake pedal down and hold it. Turn the engine off and continue to hold the pedal down with light but steady pressure for about 30 seconds. The brake pedal position should not change during this time. If the pedal slowly moves up it indicates a leak in the constant pressure chamber of the booster.
Park the vehicle and turn the engine off. Pump the brake pedal a few times to relieve any residual vacuum in the booster. Push the brake pedal down and hold it with light but steady force. Start the engine. The brake pedal should drop slightly, and the pedal should change from a high and hard feel to a normal feel. If it does not then this indicates that the booster might not be receiving vacuum from the engine, possibly due to a plugged vacuum hose, a vacuum leak or a defective check valve. It can also indicate a failure of the booster itself.
Park the vehicle and allow the engine to run at idle for a minute or so. Push the brake pedal down and hold it. Turn the engine off and continue to hold the pedal down with light but steady pressure for about 30 seconds. The brake pedal position should not change during this time. If the pedal slowly moves up it indicates a leak in the constant pressure chamber of the booster.
Park the vehicle and turn the engine off. Pump the brake pedal a few times to relieve any residual vacuum in the booster. Push the brake pedal down and hold it with light but steady force. Start the engine. The brake pedal should drop slightly, and the pedal should change from a high and hard feel to a normal feel. If it does not then this indicates that the booster might not be receiving vacuum from the engine, possibly due to a plugged vacuum hose, a vacuum leak or a defective check valve. It can also indicate a failure of the booster itself.
