I'm replacing a single master cylinder and was wondering after I successfully bench bled the new master cylinder, after I remove the old leaking MC, and put on the new single master cylinder with just 1 line, will the brakes need to be rebled or can I get away with just the simple swap out and have a normal brake pedal?
Normally that will work. However with a leaking master if it was ever ran low on fluid you may have air already trapped in the system. If possible bleed the rest of the system. Most re builders specify not to mix fluids or old fluids that could void the cylinders warranty.
