Re: 85 50hp Merc. top carb not getting fuel
Pull the fuel line off the top carb, use a remote starter button to crank the motor with the ignition OFF, you just want to see the fuel pump flow, not start the motor. If the fuel pump is NOT pumping fuel up to the top carb, time to find out why. Restricted line, filter, poor fuel pump?
I'd vote for the pump, but without checking the lines, it could be something restricting that upper hose.