How to replace and bleed slave cylinder Hyundai Elantra '92

Undo the fluid line onthe old one .the removeit attatch thefluid line to the new one before bolting it in place ,make sure the master cylinder is full of fluid be fore undoing the bleed screw a couple of turns,it will gravity bleed itself ,just keep you eye on the fluid in master cyl, as soon as clear fluid cmes out the slve cyinder do up the blld screw and the job is done..NOW i have to ask this ,i cant help my self, what makes you think it is the slave cyl that is at fault? i see people change them quite often and the problem ,more often than not is in the master cyl. good luck