quote:Originally posted by 4NFORD:
I just swapped out my master and had the same problem. Did you bench bleed the MC prior to installation. I got lazy and skipped that step. After getting the soft pedal like yours, I bench bled it and it solved my problem. I don't know why the symptom doesn't show without the motor running. In any case, this is what solved my problem.
Once I tried pressurizind a master Cyl fo bleeding purposes. (I was experimentng). Problem was I emptied the MC too quickly and voided it of fluid. At this point the best thing to do would be to re-bench bleed it. Instead, I hooked up a very large syrenge (horse syrenge) filled it with about 80% fluid, drew some from the caliper holding it up so no airbubles would be re-introduced then fed the fluid back through the line. This bled the MC just fine.
Also, with general bleeding, I use a tank and a vacume pump. It makes self bleeding a little easier:
I should update the photo though. I have the vacume tied to the other end of the tank.
HF has a cheap vacume pump. I wonder how well it would work.
Gary