Let us suppose you have carb off, 160 cranking compression on the gauge.

The carb is new or rebuilt and returned to base settings.

Fuel is in the bowls and near the correct height.

The ign ground is to the block and solid.

The power + source is coming from both column harness wires. One from the keyon source wire, and one from the cranking source wire.

Base timing is 30 mechically forced or 16 base mechanical with 10-12 from the vacuum pod. Still a good 30 for cold start up.

These facts true it should run. always. What is different?