When the key is on it won't turn over the motor, so I hooked up two wires from the starter to jump it. While leaving the key in the on position, when I jump it, the motor cranks but doesn't start. I'm thinking the Timing is out of whack, but the timing light seems to work when it wants to(i just got it today it's a craftsman). So how might one go about this mission? Please help, I'm almost done!!!! thanks