Hey,

I just replaced the front and rear brakes with disc brakes and ran all new brake line on my 54 3100. I also replaced the mater cylinder with a dual master and proportioning valve. The pedal was able to be pushed to the floor fine yesterday but I did not have help to bleed it so I pumped it a couple times just to make sure it worked. So today I tried a vacuum bleeder starting with the farthest away in the rear and I tried fora good deal of time. After no fluid I asked came out I asked my son to help by pumping the brakes. He got in and the pedal will only move maybe 1/2” at most.

I have bench bled the master before installing as well. I disconnected all brake line from the master and had my son push the pedal again and again at best it will move 1/2” and a small amount of fluid will come out of the front and rear ports on the master.

I tried tapping on the master as suggested on a google search about condition no pedal and that has not worked. Any help at all would be greatly appreciated.