so today my car was stuck in the snow and i was steping on it in reverse for like 20 mins i finaily get out and i notice some coolant in the snow. So i pop the hood and notice steam pooring out of the ruber hose, it was on that went to the back of the head to the block oin my jdm b16a, i limped the car today my dads and it started geting hot so i pulled over and let it cool then made it there. less then a mile. What would cause the coolant line to just split like that?