05 honda metropolitan starts but won't rev up?

Accidently put 2 cycle gas for weedeater in it. So I removed tank, cleaned it out. Installed new gas. New gas filter. Plug and air filter. Changed oil. Removed carb and cleaned jets, float. What else could it be? Fuel pump. If I hold my hand over the air intake and choke it, it will rev up like it should, as long as I allow a little air to get in. But when it revs up and I take my hand away it waaaaaa, and dies.
Frekin things got me pissed.

You removed the carb. Did all the linkage get put back on correctly?

I don't think the linkage could be off but I do think there may be air getting sucked into the fuel line because of a bad clamp job at the tank. When you put your hand over the carb you are using the engine vacuum to help pull fuel in maybe over coming the vacuum leak enough to run the engine. It is a fuel supply problem and with a carb you don't have a electric pump and it did work before you did all the unnecessary work of pulling the tank. Two cycle gas will burn just fine in a carburetored engine.

Bike is starved for fuel. Replace the fuel petcock (if it has one) or the fuel valve. Clean the jets again.

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