My friends car will not start every once in a while when its warm. It does after about five minutes of cooling off then pops right off. Today it would not start at all for about 6 hours, then it randomly started up just fine and now no issues. The ECU isn't throwing any codes and the car gets spark, but not sure about fuel, but fuel pump is fine. when the car does run it has all the giddy up and go as it did 5 years ago. Anyone know any reason for this to happen?