Do I need to bench bleed my master cylinder after I rebuild it? It appears that all the bleed kits are set up to bleed from the brake line outputs. The older master cylinders have bleeders on them. Can't I just use the bleeders or do I need to bleed them from brake line outputs?

yes it is neccessary..

So do I leave the bleeders closed and bleed from the brake output lines?

bleed from the ouput lines. got to the parts store and get a length of tubing and make this:

http://www.stovebolt.com/techtips/master_cylinder/bleed.jpg


pump very slow, you want to advoid aireation....