Fill the clutch master all the way up with fluid, then put the cap back on and pump the clutch pedal about5-6 times, then openb up the clutch master again and add fluid. continue to do this until the pedal gets harder. If it doesnt get harder, check for leaks at the clutch master and the slave, make sure u look inside the car where the cluch master bolts to cause alot of the times they will leak from there