Hi guys,really hope you can help,my granddaughter has a fiat 500 2012 plate,here goes..she had no clutch (no pressure on pedal ) So her dads friend some how come to the decision the slave cylinder was at faught so has a new cylinder fitted that was ok for 2 weeks then it went again so then had a new clutch fitted,that didnt solve the problem and the garage that fitted the clutch said the master cylinder had gone,so i then took it to the garage where i get my car repaired and got them to fit a new master,bled the system for ages got all the air out and couldnt get a pedal so left it to the next day,checked the pedal and it was working perfect so took it to my daughter and within a hour the pedal had gone again ..please can you help