Has the slave cylinder been fitted with the bleed nipple higher than the fluid pipe, I don't know if it is possible to fit it 180 degrees out, but it does sound like air in the system and if the bleed nipple was below the pipe it might allow air to be trapped in the cylinder.
Assuming that the clutch worked OK other than leaking fluid prior to the swap then your problem has got to be something that has just been changed.
If you had similar symptoms prior to the swap than you could have problems with the clutch release arm or release bearing inside the bellhousing. I'm new to Citroens, but used to have a Land Rover that had the £10 clutch arm fail on two occasions. (engine or gearbox out)
Have you been losing clutch fluid or is there some other reason that you have diagnosed a knackered slave cylinder.
Assuming that the clutch worked OK other than leaking fluid prior to the swap then your problem has got to be something that has just been changed.
If you had similar symptoms prior to the swap than you could have problems with the clutch release arm or release bearing inside the bellhousing. I'm new to Citroens, but used to have a Land Rover that had the £10 clutch arm fail on two occasions. (engine or gearbox out)
Have you been losing clutch fluid or is there some other reason that you have diagnosed a knackered slave cylinder.