jim

The problem seems to be at the ABS unit though. If I disconnect the rear line going out of the ABS unit there is no fluid coming out at all. It doesn't matter how hard the brake pedal is pushed. Nothing comes out. On faults on the scan tool either. 

not at all.

It isn't a one toner ute so it doesn't have a proportion valve. 

did that but absolutely nothing comes out. Even with heaps of pressure on the brake pedal.

I've got a BA2 xr8 ute that i'm trying to bleed the brakes on. I bleed the front ones ok but I can't bleed the rear. No fluid comes out. I loosened the brake line at the master cylinder and fluid came out then loosened at the ABS unit and fluid came out then loosened the rear line at the ABS unit and no fluid comes out at all. What am I doing wrong?