Assuming its hydralic, I'd look at the slave for leaking and same with the master. Rebuilding the slave cly is pretty straight up, I'd replace the master cly though as they are a bit tougher to remove and and have a few more internals. Your kinda lucky in that it'll come right back up. Does it tend to slowly engage the clutch while sitting at a stop with car in gear? That and low pedal have been most of the problems I've seen over the years.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.