You say the carburetor is new?
Many carbs on small engines today have a valve under the float bowl if it is that type of carb with the fuel bowl at the bottom of the carb.
There is a fuel shot off solenoid with a wire attached to it right under the fuel bowl.
I have seen those go bad.
They need voltage to the solenoid to pull in the plunger that is inside the fuel bowl.
Many times that plunger is corroded or stuck and if it is stuck it shuts off all fuel flow to the main jet.
I feel your getting fuel to the carb and possibly into the carb but if the main jet is plugged you will not get the fuel to flow into the engine.
Now if you loosen the fuel bowl and fuel comes out you know the jet is restricted.
Those electronic plungers or solenoids can be taken out and the plunger part snipped off or ground off so you will no longer have it plugging the passage.
Those stupid solenoids are as handy as GFI receptacles.
Winner, winner!
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