so you blow air here that i circled or else where?
View attachment 53533
If yes, then as i said before. The screw at the bottom of the carb bowl also acts metering fuel. Pinch the fuel line, take out the screw and with a needle and or carb cleaner clean out the small hole on the side and the 2nd hole on top.
Just because there is gas in the bowl does not mean it will be pulled up into the venturi if the passages are dirty.