My snake wouldn't start one morning as I was leaving for work, starter would just click. 1st thought was battery, but it wouldn't crank with booster box on it. 2nd thought was starter. Changed starter--still no start. Replaced negative cable(looked bad), still no start. Did a search on here and found out someone else had same problem and replacing parts, still had no start. It turned out to be a bad ground on the motor. Moved the ground from near oil filter to a stud on the front of the motor and it fired right up. Everything ok now, but take it from me, check your ground before you start thowing parts on the car.