Generator Fuel System '95 Rexhall Vision

You said you blew into the pickup line and you heard bubbles, so the line is not kinked or obstructed. I would put a clear plastic line on it and suck the fuel into the clear plastic then put your finger over the end and see if there is any drain back into the main tank. If not that means your line is not rotted. The next thing to do is check to see if the fuel pump works by attaching a clear plastic hose into a gal container and see if it draws fuel from the can. If it does add some Seafoam as JohnJoey suggested and run it for an hr under load. If not make sure your electric connection are good and you are getting power to the fuel pump before you replace it. Good Luck