E30 Zone

hi guys i parked my car up for winter it was fine, started it up this week and the clutch pedal has alot of play and bitring point has gone down, engaes all gears and drives fine, after driving it short while the clutch went normal again? tried today and play has come back again? i checked there is no fluid on the floor incase the slave cylinder is leaking? could there be air in system? any help would be appreciated thanks

Have checked under the pedal? It could be the master that is leaking.