s/r 340 spark?
that could very well be the cause of the problem , as well as the points and condensors could need replacing, are you sure that the ignition is not at fault here? if so try unplugging ignition and see if spark is present, if no try new coils if you can and check that the spark plug wires are fully screwed into the metal post in coil as wellas all grounds are good. did the problem happen after you installed the new plugs , did it have spark before ? ,dave