Quote:
Originally Posted by marsdog
You mean leave the master cylinder reservoir open during bleeding? No, I did put the cap back (to avoid squirting fluid, I read somewhere) but disconnected the cable goes into the cap (not sure what that is for). How did this hurt the master cylinder?
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Brake fluid does not compress. So if you put the cap back on, then you have someone open up a bleeder, push fluid out, tighten the bleeder, and then let up on the pedal, things can break. AFAIK, there is not a design that overcomes this basic principle, but you might get lucky and it's just air in the system. A vacuum bleeder will set you straight. If you can get a hard pedal again- then you're ok. If not then you need to replace the master cylinder and be sure to follow the bench bleeding process, then vacuum bleed again.