OK, so I went to replace master cylinder (didn't bench bleed it, I'm a fool) because I only had about the last 2 inches of pedal to apply brakes but I get zero fluid to the rear at all when trying to bleed them.

It's a 1986 F150 4X4 302 EFI/AOD. Is this a byproduct of not bleeding the MC first? or could there be something in between jacked up?

 

is it a split resivoir

 

If you mean separate reservoirs, yes, not separate from the body of the MC like a plastic reservoir on the MC.

 

yea thats wut i meant, one of the pistons in the MC is probably stuck in front of the line, you might need to take it off and bench bleed it

 

Yeah, I am going to do that tonight. I am also going to do both the wheel cylinders and pads in the back tomorrow. I am going to make sure the brakes work by Saturday so I can drive this damn thing