Out of ideas - need help

[adileo]

If you read my last post - 39 coupe - you know my car is not well and will not start. The last time is ran in garage (thus am) at idle it ran for 5-10 minutes and stalled. Prior to that car was bucking bad on a short ride.

So far:
Took both edlebrok 94s (Charlie rebuild few years ago) off cleaned all ports with carb cleaner and blew out with air. There was some dirt particles in carb prior but cleaning did not solve issue of no start.

I tried 3 different coils and 3 different condensers. I currently have on a Skip built coil.

I replaced the ignition switch.

When testing coil I’m getting 3.5-4 volts while cranking

I pulled the distributor and replaced the points (.015 gap- no machine) and condenser with NOS parts.

Tried to start and car cranks well it is backfiring thru exhaust but will not start.

Note after installing points and no start. I had spark on number one plug on an initial crank but then no spark.

I’m taking a break from it, as it’s wearing me down.