List,
A problem surfaced today on my 1968 Crown Coupe, as you might guess, it concerns the brakes. This car has always had excellent brakes, which never caused a problem, until today. Here is what happened today, the car had good brakes at the start of the drive, but when I stopped for any reason, stop light, etc, noticed that the brake pedal would slowly sink toward the floor from the pressure of my foot. At first, a couple of rapid pumps gave a hard pedal, but then the pressure of my foot again caused the pedal to go lower, which allowed the car to creep forward. Just as I arrived home, had hardly any brakes left at all, more pumping of the brake pedal had no effect. Of course, I checked the master cylinder for fluid level, and found both compartments full to the brim, The engine runs smooth, which makes me doubt if there is a vacuum leak. I need your suggestions as to what caused this problem and the fix you might recommend. I have owned this car for fourteen years and the calipers had been converted to stainless steel sleeves prior to that.
Thank you,
Bill/Imp, 68's
