What year model? some hds have vacuum diapraghm...most have a filter in tank on petcock. remove and clean/replace
The engine needs to be pumping air in order for the vacume petcock to allow fuel to flow. If the vacume line is damaged or disconnected it will not flow fuel. If your filter inside the tank is clogged that could also cause this (unlikely).
Just remember engine cranking = fuel flow ;)
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HI THANK YOU:
I dont know why it says desktop telephone!!!! would be cool though.Any way its a 1990 harley fatboy with an s and s super e carb. thanks MIKE
What bike and year?
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