I have a problem with the master cyl on my 1986 Sierra Cosworth, the system pressurises ok but no fluid comes out of the master cyl port that supplies the rear brakes anyone experienced this and can shed any light.
Any help appreciated.
Thanks.

 

Is the ignition switch on when your wanting brake fluid to come out the rear pipes??

 

Hello Glenn,
Thanks for the reply, I have diagnosed the fault, the piston is seized in the housing that the brake pedal rod operates on, I have had it apart and freed it off so now hopefully the pedal has enough stroke to feed the rear brakes, time will tell.
Happy Daze!
Kind regard,
Peter.