82 sc won't start
 

ok was driving the car around town a bit noticed a slight humming noise maybe, maybe i was hearing things got home turned off the car, went back to start car about 15 min later no start..... any ideas before i have to have it towed to my wrench? first problem i have had with the car really but i have been having slight issues after driving say up to the store shut off motor come back in a few minutes start car again and it runs rough for a few min before stablizing out