i dont think just bleeding will help.u probally have pressed the pedal to many times to the floor.like gschith sayed once u press to the floor u willl need a new master .and one thing to pay attention to is when u do replace the master look into the brake booster if there is any prake fluid in there.if there is remove all of it if possible.fluid from a leacking master cylinder.if u need help on bleeding than let me know