your answer is simple....it is the clutch master or slave going out. it is bleeding by.....but the nice part is this....
If you go to ford, you can buy a clutch master/slave assembly that is pre bled and filled with fluid....Ready to go. The only othter thing you need is the rod that attatches to the pedal, because its a (*&^*&^&*&^*(%&^ to get out of the master your taking off....so get the slave master assembly, a new clutch rod, and install it. YOu simply twist the master about 90 degrees to the firewall and it comes out after you pop the rod off the pedal...then push and twist the slave out of the tranny counter clockwise....pull the old one out, rout the new one in, and reverse of the above and its fixed.....
Only note is this...put the new rod on the pedal....aligned with the new master but not pushed in....then press the pedal down to install the rod...thats the easiest way to do it......you also have to take the clutch pedal switch off the rod...which is pretty strait foreward...if you look at it with a flashlight you will see the tabs that hold the plastic piece in place that keeps it on the rod...