Originally Posted by jsklenar
I have a 1994 yj. I converted the rear brakes to disc. Installed the proportioning valve from a 4 wheel disc grand cherokee, bleed the system 3 times and the pedal is still spongy the first time you push it. It is fine the second time, anyone have any ideas?
Thanks for any help.
you have air in your system.
did you bench bleed the master?
did you bleed the combo/prop valve?
there is air somewhere... be prepared to run a couple quarts through the system.. =(