Brakes
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Brakes
I have replaced the front and rear brake pads and rotors. Also, put in new caliper kits to replace the stainless steel slides. My brake peddle is real soft. I have used a vaccume bleeder at all wheels. With the engine off the peddle will pump up firm, but the minute I start the engine the peddle is soft again. How do you bleed the master cylinder on a 1997 F250 4wd with rear ABS? Any suggestions would be appreciated.
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Joined: Jul 2005
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go to the back right side brake (furthest from the master cyl). loosen the bleeder, put it back finger tight. pump pu the brake pedal 10 times (motor on) , hold the brake pedal dwon, have budy crack the bleeder and drain out the air and bubbles. do this 5-6 times to flush all the air out of the line from the master cyl to the back end. after each 3-4 times, refill the cylinder with brake fluid, dont let it get down and such in more air.------ do the same thing to the front passenger side. in the end, try the pedal. if it still has some spunge, then do the driver side and should only take a couple cycles on the driver side front and rear since the main line has already been purged.
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Brakes
I did not have two people so I had to use a vacumn bleeder. I started the truck engine and started at the right rear and proceeded to the right front. The system still had air so I continued to bleed the right rear. The fluid which was coming out of the right rear was very very dirty. I continued bleeding until clean fluid was coming through the system (one large bottle of new brake fluid). The brakes seem to be okay now. I guess my problem started because I thought I could gravity bleed the system by opening the bleed valves and letting fluid drain into a cup but I guess air will still get into the system. Anyway, thanks to all the folks that responded. Tom Davis
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ebroncohead
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