Clutch doesn't want to stay engaged. When I start it the clutch works.
I can shift all gears. But withing a minute it engages sooner and
sooner until with the pedal on the floor it is fully engaged.
If I shut it off and restart it does the same thing, works at first but
fades fast. Generally, would this be the master cylinder or the slave
cylinder that does the pushing at the bell housing? TIA for any help.