1) Make sure the coil wire is properly connected to the distributor cap and the coil.
2) Check the spark plug wires to make sure they are properly connected to the spark plugs and the distributor cap.
3) Make sure the distributor cap is clean and free of moisture.
4) Check the points in the distributor to make sure they are clean and properly adjusted.
5) Check the condenser in the distributor to make sure it is working properly.
6) Check the ignition coil to make sure it is getting power and is working properly.
7) Check the voltage regulator to make sure it is working properly.
8) Check the battery to make sure it is fully charged.