Installed CPP front disc brakes with booster on my "54" 3100 everything is located in the original location on the frame. I bench bled the master cylinder and than bled all the brakes but could not get a hard pedal. I than removed the master cylinder and bench bled it a second time just in case and I installed residual check valves on the porprtioning valve in case I was getting any bleed back, I than bled the brakes again still a soft pedal, if I pump the pedal a couple of times it gets firm. I am at a loss as what to try next any ideas are welcome. Could the master cylinder be bad, bad proportioning valve how do I know if I have a faulty part or just operator error???
Thanks
Mike
