Brake Fluid Change???

[tmontague]

The problem I had was that not enough fluid was being drawn down to the bleed nipple to do an adequate flush and bleed. The vacuum was being maintained without issue but I find putting pressure at the main reservoir always flushed way more fluid through the system. I would have a small drop with the mighty vac and a full rush of fluid with the 2 person method.

As long as you have a helper and a block of wood to stop the pedal from going all of the way down it take very little time and gets everything through the brake lines and out.

[dogsridewith]

Originally Posted by tmontague

The problem I had was that not enough fluid was being drawn down to the bleed nipple to do an adequate flush and bleed. The vacuum was being maintained without issue but I find putting pressure at the main reservoir always flushed way more fluid through the system. I would have a small drop with the mighty vac and a full rush of fluid with the 2 person method...

Then your problem was unclogging the system BEFORE being able to bleed it.
I've only seen this level of clog--rusty dirt-- happen inside the tip of the nipple, or maybe just inside the wheel cylinder...resolved by removing the nipple completely and clearing nipple/cylinder with a drill bit(s). Stomping the pedal would certainly produce more system pressure to clear rust in the lines, sticky proportioning valves, etc.