No spark- what am I missing?

^^Basically it^^ The points short the neg side of the coil to ground when closed, but the condenser (capacitor) in the distributor must be good.

Common problems........

Points defective, IE something causing a permanent short like a bad insulator

Improperly gapped

Bad "condenser"

Bad/ broken primary wire


Use a test lamp on NEG coil terminal. Rotate engine, lamp should light and "off" as engine turns and points cycle.

If tach is or other accessories hooked to coil NEG try unhooking them.