My MB200 w123 1979 car was recently repaired after a minor collision and the car has been sitting idle for several months now. I've recently had the car tuned up ( new sparks, points and condenser) to be used again but the engine has been idling erratically. I have only used the car for a day and a half now when the engine started to stall. Now the engine doesn't even want to start at all. I also bought the car a new battery. What could be the problem?