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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

jaydee2709

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Old Aug 19, 2012 | 03:49 PM
  #1  
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jaydee2709
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jaydee2709

I have a 88 f250, 7.3 engine. I'm having a brake problem. When the engine it running and the brake pedal is depressed it will go all the way to the floor. I have no leaks and the master cyl. was replaced to no avail.
can any body give me a clue as how to fix this problem
 
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Old Aug 20, 2012 | 06:36 PM
  #2  
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UNTAMND
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From: Lansdale, PA
You have air in brake system.
Is the system leaking fluid. Is there moisture in the fluid.
Start at rear and bleed brakes carefully. Put a small hose on end of bleeder and into fluid container. Keep master cylinder full of fluid.
You should do this when truck is running. Seems to help me get a firmer pedal.
After you are sure There is no air in rear then go to front.
Try bleeding them again and let us know how it turns out.
 
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Old Aug 20, 2012 | 08:50 PM
  #3  
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burnout400m
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From: Pueblo, CO
I usually have to go back and bleed it a couple more times. Especially since you introduced air into the system all the way at the MC so the bubbles have a long way to go.
 
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