I have a 2004 rx-8. It has approx. 70k miles on the original engine. I just replaced the ignition coils and spark plugs. I was driving to work on the freeway one day and it started overheating. I flipped on the heater full blast which showed it dropped the needle to normal temperature. I pulled off the road immediately and shut the car off. Looked under the hood and I could see my radiator had a crack. There was still some coolant inside, but not much. I let it sit and towed it home that night. I put more coolant in but it wouldn't start... I tied jumping it but it wouldn't start. It Will not turn over or crank. I know the starter was needing to be upgraded (hot start issue) I was just about to replace it. Oz there something in missing... someone in my neighborhood said I blew the motor. But if that was the case, wouldn't the car have died while is driving? Any help is greatly appreciated.

 

Remove the starter and get it tested