No Fuel Pressure after driving car.

If it's a venting issue, you should hear the pressure release when you open the gas cap...

If venting is fine, then there will be no release of pressure when you open the cap after running it...

Just trying to throw more ideas in the hat...
I will keep that in mind. What would cause a venting issue? The gas cap is a challenger style flip it is a 1970 non ecs tank.