We have replaced the master clylinder and rear wheel cylinders. Brakes will not pressurize after a gallon of bleeding. We have followed the RR, LR, RF and LF bleeding directions pumping three times releasing pressure...
The break lines apear ok
Is there only one proportioning valve in the front? Is this a common failure?
On the back axel is the just a brake line T or a proprtionig valve and could the fail?
Any more ideas would be great.
Thankyou