soft brake pedal

i have replaced calipers and hoses on my 3500 and cannot get the brakes to pump up properly,,the pedal goes to the floor,does the brake booster if its not working properly have anything to do with this thank,i know the brakes are blead properly,andhas anyone had any problem with the 2 check valves

1. Check level in brake fluid reservoir

2. Insure tight connections and look for leaks

3. Re-bleed and test.


There has to be some leak, somewhere if this happened after the new brakes were installed.

the pedal was soft before i changed calipers and hoses,adjusted rear brakes and still have soft pedal,could booster cause,pedal is soft at top goes down about 4 inches then gets hard thanks

4 inches? Wow, that's a lot.

I'd suspect the master cylinder. What year is your 3500? If it's still under warranty it's time to let the dealer pay for it.

is your truck a diesel? If so you need to have it running when you bleed your brakes.

i have replaced calipers and hoses on my 3500 and cannot get the brakes to pump up properly,,the pedal goes to the floor,does the brake booster if its not working properly have anything to do with this thank,i know the brakes are blead properly,andhas anyone had any problem with the 2 check valves

I know this might be way out but are your rotors and drums the right size and not turned to big (for drums) or too small (for rotors). I have had a vehicle in the past that had a very low brake pedal and come to find out one drum was cut too big that the brake cylinders were expanding to their maximum and resulted in a low brake pedal!

i have found that the calipers are sucking in air through the bleeders it is not leeking fluid but is sucking in air,thanks for all sugestions

Dam; so all this time you've been having air going IN through the bleed ports? Wow. Hope you weren't driving it.....

yes it was pulling through bleeder ports,but no fluid coming out ,now it is pulling under braking to right,rt front smoking after heavy braking,and no did not drive in untill now

Probably needs to be bled more on the left front. You probably did already, but make sure the reservoir is full.