My car's engine just swings but does not start. I was driving, car was performing perfectly, then stopped at a traffic light and car just switched off. Tried starting it bt to no avail. The starter swings and everything but she just wont start. Not even with a kick start. I got a friend to tow me home and once again we tried to start the car then their was this God alimghty bang (backfire) and we just left it, no smoke no leaks nothing enegine just wont start. Pleas help. Also had my aircon fixed two day before and the car was working well. Check all the fuses no problems.