I attempted to drain the water circulating system in the 2001 PT Cruiser. The draincock turned 1/4 turn and stopped. It was hard to turn by hand anyway. There seemed to be a notch at the closed position and the 1/4 turn position. I didn't want to break anything, so I thought I would ask first. Nothing came out of the drain. Is this draincock supposed to turn all the way out?