There is a lot of good info above. Follow through with the diagnoses give. If not you will be going in circles. I'm going to go above and beyond here. You drove a car home x miles that sat for x years.
What could go wrong!
Compression test, leak down test and vacuum reading if it runs long enough. Find out the condition of the engine. Fuel,Air,compression,spark. If one is bad it will run bad if at all. Suck Bang Blow.
Vacuum actuators are rotted and erupt. Vacuum advance actuator erupts. Remove all vacuum lines and plug.
Condition of exhaust. Probably not but check!
If that's hard what else would be hard and fail? Driving a car that sat for years. Intake gasket? It might start and run a bit but it won't have good power.
That could be. Static time it. Line up marks and check number 1 plug rotor how close it is to the right location. That is if you didn't move from there when is was running. Give us a picture.
What does that tell you. A few things. 1 It went bad, right! 2 What might have happened in that event. The brown wire ing 2 gives full voltage to the coil when starting. I would say that's not the problem. The blue wire is the run wire. That feed power to the ing all the time when key is in the run position. That's why I say check connections 22 and 23. Might be burnt. Under column plug? Be sure to check grounds. The vibrations of the car running loosen the connections?
I'm taking it, that you ruled out the ballast resistor?
May it's climate change?
