Brakes problem
1995 Ford F350 V8 Two Wheel Drive Automatic

Ford F350 diesel. No brake pressure - the pedal goes to the floor. Have replaced the master cylinder (4 times), have replaced the vacuum booster and have bled the system several times. When the truck is running, no pressure, the pedal goes to the floor. When the truck is off, the pedal is full. Any ideas on what I can do now?

Did you bench bleed the new master? If yes, pinch off the brake hoses, have someone hold light pressure on the pedal, remove the clamps from the hoses, when your pedal drops, look for leaks at that wheel.

[quote="kf4116"]Brakes problem
1995 Ford F350 V8 Two Wheel Drive Automatic



I'll try that in the morning and contact you again if I don't have any luck. Thanks so much for your help