Help Needed brake pedal play

iracemine · Sep 3, 2012

Hello, just changed the caliper and bleed the brakes. Test and found brakes to feel really weird. So I re-bleed with all 4 corners coming out clean as a whistle. Now the brake pedal has about 1-2 inches of travel before anything happens after that the brake feels normal, or if I hit the brakes fast then the brake pedal acts normal.

Please help. this is annoying.

P.S. the caliper was from autozone and had huge pistons.

DaveBen · Sep 3, 2012

If you got bigger pistons in the calipers, then it will take a bit more pedal travel to get the pistons to fill up with pressurized fluid. Sounds normal to me. Less pedal effort to stop?? More pedal effort?? Should be more effort to stop. Why did you get different calipers than stock?

Dave :dunno

iracemine · Sep 3, 2012

Same pedal effort to stop after that initial "free play". Dave, the pistons are the same diameter. but there wall thickness is through the roof.
Long story is I got a napa caliper that took a dump with in a year, and after the whole rotor fiasco I will never ever go back there. So I got me a Autozone caliper. I can't believe that would be it but that's why I am here. I am stumped. In my race car if there was that play in the pedal I would just shore up the rod to the MC and call it a day. Could the MC be done? Or the hydro booster be toast?

All I want is that "free play" gone.

BJS · Sep 5, 2012

is there a bleeder valve on your ABS Unit? I know the brakes on the OBS trucks can be a pain to bleed if you don't know about the bleeder valve on the RABS actuator valve.

iracemine · Sep 6, 2012

don't know. I'll check. Thanks!

iracemine · Sep 7, 2012

nope. no such luck. I did find however I need a "scan tool" to open the abs system while I bleed the system, is this true???? please help. I need to tow up to the track next weekend and I dont want to die.

DaveBen · Sep 7, 2012

I did not need one in my '93 F-350 or my 2004 F-350. Since your truck falls in between you shouldn't either.

Dave :dunno

iracemine · Sep 26, 2012

It was trapped air in the ABS.

Help Needed brake pedal play

iracemine

black and tan

DaveBen

SDD Senior Member

iracemine

black and tan

BJS

Full Access Member

iracemine

black and tan

iracemine

black and tan

DaveBen

SDD Senior Member

iracemine

black and tan

Members online

Forum statistics

Latest posts