Folks, my brake pedal hit rock bottom again a few days ago, not sure why. Fluid is full in the master cylinder, and we bled the brakes twice on Saturday, all to no avail. The pedal still hits rock bottom and now has an obvious air-suction sound when you push hard.
Where else could air be getting into the system?
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?