I'm wondering if the electric fuel pump is enough to unseat the float valve.
One thing I dislike about modern scooters is the vacuum-operated fuel pump. It seems to me that the design is due to the bodywork that precludes a typical fuel petcock. The bandaid vacuum pump stops pumping when the engine stops running. All great in theory, but a nuisance when they fail or run out of fuel at low vacuum.
Do you have a way to ditch the fuel pump and add a petcock? That should provide a steady supply of fuel at gravity pressure, assuming your tank is higher than the carb.
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Weldangrind
"I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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