Brake Issue - No pressure on pedal.

[Herblenny]

Here is my issue today..

I was bleeding the brake (which I have done many many times) using my vacuum bleeding system.

I started off my bleeding the rear and than moved to the front. When I was bleeding the rear, I noticed that I was having hard time pulling the fluid. So, I got inside the car and push the pedal so that some fluid will be pushed into the vacuum pump. It worked and pulled about 1/4 quart of fluid. When I got to the front, I vacuumed up and no fluid was pulling. I then got inside the car and pressed the brake pedal and it just went all the way down without any resistant. I kept pumping and nothing. I took the front caliper bleeder valve and no liquid came out. Its not pulling any air nor fluid??

Any suggestion whats going on?? This car that I'm working on, brake fluid seems like it was never changed out.

As of now, I'm guessing it could be clogged front line somewhere or possible bad master cylinder.