Update: Went out today and installed the pressure gauge on the Right Front Rear Caliper. Best pressure reading we saw was about 300 psi. So I installed the gauge at the MC and was getting 800-900psi. Reinstalled in the Right front rear caliper and bleed good. Best we got was 400psi. Is it the combination valve causing me a problem?
I have replaced the valve with what I thought was a PV4 for Disc/Disc conversions. I did pick this up from a local shop with no markings or paperwork. I had the PV2 which I removed and replaced with this PV4. Did I get the wrong part or defective? Is the PV4 the best option?
Thanks,
Neil
Don't be offended, but are you sure you didn't measure the pressure to the fronts when you had the gauge at the master cylinder?
You need to read the pressure at EACH output at the master cylinder. That'll tell more of the story.