Jeep won't stay running (ignition maybe)

[rollbar]

I rebuilt the carb/fuel to carb.

Set timing and adjusted while cranking to get her to fire.

Motor fires and stops running (Vroom, then doesn't stay running). I can keep hitting the key and it will fire then in RUN mode it will stop.

Is there a way to jumper the solenoid to the coil so it will stay running to see if it is in fact the ignition switch that maybe causing this?

Any ideas are helpful.

Thanks again,
Jim