[porschenut]

Ever since I replaced my brake master cylinder about 3 months ago, I haven't been able to get a nice firm brake pedal even with repeated brake bleeding with the Motive pressure bleeder. The thing is, I never filled the master cylinder with fluid before installing it - I forgot to do this and put it in dry. Is it possible there is air stuck in there that won't come out with a normal bleed procedure? Would it be a good idea to remove it, fill it up and reinstall it?

Another point is that I have not readjusted the actuating rod between the pedal and the MC. My understanding is that this would control the pedal height at which the brakes begin to bite, but probably wouldn't have anything to do with sponginess. Correct me if I'm wrong about this.

I'm really more concerned about the inability to get a nice firm pedal. I didn't used to have this problem before I replaced the BMC. However, the brakes work ok even on the track, so I'm trying to figure out where the trapped air is, and why it won't come out.