Quote:
Originally Posted by MACROMOLECULE
2012 GasGas EC300R
Nissin Rear Master Cylinder "11" BE660002509
So I need some help here. Right now my rear brakes are completely nonfunctional. I was bleeding the lines to remove air bubbles by depressing the foot lever a few times and cracking open the bleed screw, quickly shutting it and repeating the process. Things were going well when all of a sudden I lost all resistance in the foot lever and now when I depress the lever very little brake fluid is being pushed through the lines even with a wide open bleed screw. There's no external leaking that I can see. Do you think I broke the master cylinder? Or does this sound like it can be repaired with a rebuild kit. If it is a simple rebuild which kits will work for this master cylinder? I can't seem to find much information on a nissin-specific kit. Any advice?
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Trying not to assume anything, are you holding the pedal down to maintain pressure when you are cracking open the bleeder? Then closing the bleeder before you release the pedal?