2015 Nissan Versa 1.6S clutch problems!

Hey guys new to the whole forum thing. I'm not new to working on cars by any means. Any help would be greatly appreciated. I replaced the clutch this past weekend. The slave cylinder had gone bad while my daughter was driving it. I replaced everything from the flywheel to slave cylinder. While trying to pump the clutch up, as it starts to build pressure I hear a pop and fluid goes everywhere out of the vent. There's no bleeder valve, supposedly a self bleeder that you just pump til you get a pedal. I've read about air gaps between the bearing and pressure plate fingers, but that's mostly on GM stuff. Can someone tell me if the slave cylinder is over extending and causing it to blow fluid? With a new slave cylinder, it will pump up fairly quick, and as soon as it starts feeling like a pedal, it blows everything out the vent. Once this happens, it will only blow fluid from the vent. What's causing this? Please!