The points are mounted to a plate in the distributor itself, not on the cap. The crack in the cap was causing arcing.
Like the other experts here, my money is on a fuel pressure issue. You need to actually check the pressure at the regulator. Not loosen a fitting and see if gas comes out. You need to see what sort of pressure is being developed when cold and when hot. If the pressure is too low, when the engine compartment warms up, the fuel in the lines will boil and cause it to sputter and shut off.
Tuesday, January 24th, 2017 AT 7:05 PM