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If there is fuel at the squirters, there is some fuel in the bowls. Next time it happens, open the sight plug and judge how much fuel is actually in there. If you can see the fuel, there is more than enough for the motor to fire, and fuel delivery to the carb would not be the issue.

Is it possible that fuel is leaking from the carb and flooding the motor while its parked? When it is hard to start have you tried putting the pedal to the floor and crank it (to clear a flooded condition)?

I know you said the carb was recently rebuilt but is possible that there is piece of schmutz in an internal passage? Perhaps something is blocking the fuel flow somewhere in the idle circuit.






This posting made me recall a problem years ago, a friends car had stalling, hard starting problems, which led him to believe no fuel, various ignition woes, etc, etc, etc....end result was the rear float on his Holley 4 bbl had a hole and was slowly taking on fuel as ballast which in turn had the needle seat always calling for fuel, at cruising the engine was fine, but off the throttle it would sputter and die, or run ragged....


So with the engine running see if you can see fuel dripping in the secondary bores/venturis at idle, run your fingers around the secondary's venturis at idle, if they're wet, maybe you have a float issue?

Fuel puddling in the secondarys at idle/off throttle will cause a ragged idle/stall/flood conditions...just an idea