Quote:
Originally Posted by Flieger
I meant that there are cavities in the master cylinder which can hold air unless bench bled. The only way to dislodge the air with it hooked up to the system is to flip the master cylinder over and shake/tap it to get the air to move. In other words, the easiest thing to do would be take it off, bench bleed, and reinstal. Sorry for the confusion.
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I don't think this will work, otherwise one would have to perform this maneuver whenever air is in the MC. But it costs only your time to try. Inside the MC, there's only a horizontal bore and a couple of vertical holes connecting the bore to the reservoir. Pretty simple.
One could normally open a caliper bleeder screw and allow gravity to force out fluid and any air. I suspect you may have a torn piston seal that's allowing fluid to bypass the piston as it attempts to push fluid into the system. And since it's new, it could also be defective in some way.
Before you end up flushing new fluid from the system repeatedly, I'd disassemble the MC and inspect the seals to confirm all is well .... or isn't, then go from there. Remove one internal snap ring and all the parts are accessible (keep them in order).
Sherwood