1992 Lumina flooding itself

I have a 1992 Lumina with a 3.1 engine and it seems to be flooding itself out. I took the air intake hose off and turn the key to the ignition on position with the engine not running and gasoline runs out of the throttle body. I let it set until the gasoline has evaporated and try again but as soon as I turn the key to the on position gasoline starts running out of the throttle body.
Does anyone know what is going on?

Thanks in advance.
Ed