Suzuki

Having problems getting it to run right if the fuel line hooked up it not very starts and will only run wide open if i un hook the fuel line it seems to run better and burns what in the carb already then some how it sucked gas down the vent and got gas in the crankcase any help would be great

Vacuum fuel pump diaphragms go hard. its under side panel near exhaust there is a vacuum line as well to check