right brake set up as follows wilwood 4 pots clamping st170 discs at front cossie 2wd discs and calipers at rear, goodridge hoses, abs removed..
the system has been bleed using a easybleed tool and seems to have a good feel at the pedal ..the problem is once i start the car the pedal goes spongy and when i press the pedal the revs rise up and down, replaced the master cylinder no sign of leakage, thinking there's a problem with the servo as when disconnected the vacumn pipe there was no vacumn in the servo although the non return seems to work, any ideas