Replace rusty brake lines from the proportion valve to the rear wheel cylinders and when I tried to bleed them I cannot get any fluid out. I pulled the new line off the proportion valve and no fluid there. Worked before changing the lines. Master cylinder is full any ideas??

 

Op, have u taken off the wheels and verified if the bleeders are broken? If they are, you can crack the nuts where the lines are connected to the caliper and bleed that way.

 

I think you posted in the wrong thread, this one is ten years old.