Hello, Im working on the brakes of me and my friends 78 project. Let me first point out that this car is a driver and not in too bad of a condition. We noticed a leak from our master cylinder and decided to replace it as well as the booster. Upon looking at the entire brake system, we decided to replace the rotor / drums, pads / shoes, front calipers, as well at the front rubber lines.

After installing everything, we went to bleed the brakes, when I began at the rear pass. side, I opened the bleeder valve and air/fluid came out normally, but the pedal did not go to the floor. After numerous attempts of which fluid only came out, I moved to the drivers side rear. Same problem, no air was coming out, but the pedal still didnt depress after opening the valve.

I then moved to the pass. front and I opened the valve and the pedal DID go to the floor, as I was expecting with the rear. Same thing with the drivers front, worked perfectly. Front brakes work good too..

What Im wondering is if anyone has advice about what could be going wrong. We did not bench bleed the mast cyl, could that be the problem? We are getting fluid to the rear, but no brakes...

I can see no visible leaks, and the tubing that runs from the front to the rear looks good...

 

Keep bleeding the system until you get all the air out of the rear. there is still air in the line to the rear circuit.

 

Sweet man. Bled for 10 more minutes, works great. Thanks