For a while now I have been experiencing this occasional long travel in my brake pedal. What I mean by that is sometimes it feels like depressing the brake pedal doesn't do anything until it is nearly to the floor. It usually only happens when I am driving at moderate speeds around town and only when I am depressing the pedal very gradually, like when coming up on a stop sign, or preparing to make a turn. When I feel that that empty feeling in the brake pedal I just pump it once and that is usually enough to bring it back to normal.
I just bled the brakes and that didn't do anything. Anybody have any thoughts? Could this be caliper related? Master cylinder? Any input would be appreciated. I am running B6 S4 brakes all around and have been for about 5 years or so. I've had this brake issue for almost 2 years now. It has never gotten any worse or better so I didn't worry about it. Plus my audi isn't my DD anymore, but I'd like to get it resolved.