Clutch air/fluid drama's

[dloughland]

Help needed with my clutch. Had an Ace (malwood) option 4 clutch fitted to my FG 10 months ago. After 2 weeks, my resovoire was dry, and the pedal lost all resistance. My mechanic bleed the system, couldn't find anywhere where it could have leaked, topped it back up with fluid. Didn't have an issue until two weeks ago. Same issue, resovoire dry, and close to no pressure in the pedal. Again, the system was bleed and tested for air leaks, still no issues, so drove away and was good for about 2 days. The pedal again is losing pressure, however the resovoire is still full. Have been able to get by, by pumping the clutch pedal for approx 1-2 minutes untill full resistance is regained. This will usually last for about 10 minutes of driving before the pedal doesn't flick all the way back up, and friction point gets closer to the floor. Took it back to my mechanic yesterday who said it must be the master cylinder, as nothing else makes sense, so replaced it. Was good on the drive home last night, but today its starting to loose resistance again. Again, pumping the clutch pedal for 1-2 minutes will regain the pedal resistance. Has anyone experienced anything similar and could pass on some advice? Would be greatly appreciated!

[k31th]

well, the pedal is only a lever system on the master cylinder (in the pedal box) with hosing to the fluid reservoir (in the engine bay) and the slave cylinder (in the bell-housing of the gearbox). It's likely the system is gaining air from the slave cylinder.