Did you clean the connectors that come from the Stator?
It is a three wire connection. Two wires from the stator and the other on (middle wire) should go to the points.
To clean the wire connector you have to remove them from the holder.
A very small screw driver flat blade or a nail that has been flatten, will help remove the wires from the holder.
Rusty wire connection always cause problems
Vaseline or Dielectric grease can be used to help the connection from rusting.
Watch the following video