Replaced wheel cylinders and calipers - could not get good pedal when bleeding brakes - replaced master cyl -- still same problem-- pedal will come up some after pumping 5 to 10 times and will hold pressure until you release it - then its right back to the floor. 1995 bronco abs
Alot of air in the lines,probably the rears,fill up the master cylinder and loosen the bleeder screws on the rear and let them drip for 10-15 minutes,may not drip at all so thats air in it,tighten them up and pump the brakes about 20 times and hold them,have someone release the bleeders 1 side at a time with the pedal still down,then pump again about 15 times,do the same process,what you want to do is compact the air as far down to the wheel cylinders as possible so when you loosen them more air comes out with the fluid.
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