I have to believe this problem is ignition related since it happened suddenly with no performance drop prior to an absolute no start. I've poured fuel directly into the plenum and the engine will not catch at all.
As I stated I did check spark .... but it appears weak -- will replace plugs tommorrow to see if this will solve problem .. but I seriously doubt it.
I've checked distributor and cap -- perfectly clean inside. The only other part I can think of is the ignition coil. Are coils all or nothing or can they go weak causing weak spark?
Any other ideas would be greatly appreciated.