Ok I am Stumped. I have a disc/drum set up. I have been trying to bleed the system, after putting new calibers on the front. When I pump the pedal I have no air. Then hit the brake after bleeding I have no pedal, but it will pump up. Let off the pedal, wait a few seconds and hit it again and goes to the floor. pump the pedal and it will pump up again. It will not have a pedal unless you pump it up. I am lost I have never had a brake system do this----HELP