I bought a 93 sc and I have no fluid to the back brakes,front works fine, help.

Ok is that going to open it up for both lines cause this one has a duel inlet and outlet for the rear alone.

You know there is one way to find out!! TRY IT. If that dont work out replace the valve and start bleeding the system!!

you might as well flush it, and run new fluid. if i am right then fluid has thickenned to the point of causing the plunger to not function.