adamdrives
Member
- Joined
- Aug 9, 2010
- Location
- San Jose
Hey Guys and Girls, looking for some help with an 85 wagon that I cannot get a firm pedal in. Long story short, I've replaced the front pads and rotors, master cylinder and front calipers, and the car still has air in the system. Bled in proper procedure (left rear, front uppers, right rear, front lowers) in varying methods (power, pumping pedal engine off and on, stoking pedal to glass jar/hose) I get bubbles from all 8 bleeders with a hose from the caliper submerged in a jar of brake fluid. No fluid leaks visible. After a power bleed, the pedal feels nice and firm. Once running, after a few strokes the pedal becomes low. Am I crazy or is it possible there's an air leak through the back of the master? My thought process is if there was a caliper sucking air it would show in only one circuit, so it has to be something that both circuits share. I don't think there is still air trapped in the system. I've done a few major brake overhauls on 240s, and never had a pedal this stubborn. Any ideas?