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Old 01-15-2014, 03:54 PM
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brakes not working HELP please

working on my 96 f350 with the engine running you push on the brake pedal it goes to the floor you can pump the pedal up but it will fade with the engine off it will not fade I've put new calipers on the front so i could bleed the system and tried 3 different master cylinders but nothing seems to work help please

UPDATE the entire brake system has been replaced vac pump, vac booster, 5 master cylinders, all the steel lines, all rubber lines, wheel cylinders, shoes, hardware kit, drums and properly adjusted. front calipers, rotors, and pads. also bypassed the abs module. it's properly bleed we pedal, pressure, vacuum, and gravity bleed the system any help would be much appreciated

Last edited by roadkillwi; 01-21-2014 at 03:41 PM. Reason: update
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Old 01-22-2014, 03:31 PM
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u listed everything possible that it could be are you sure u do not have a vac leak to the booster
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Old 01-22-2014, 04:41 PM
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im getting 25 pounds of vacuum at the booster and the booster holds vac for a long while with engine off
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Old 01-23-2014, 02:09 PM
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now i am stumped, i`ll talk to my buddy see if he can figure it out he`s a 7.3 guru
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