85 50hp Merc. top carb not getting fuel

bigal1951

Recruit
Joined
Aug 25, 2008
Messages
1
I have a 1985 4cyl. 50 hp merc. The top carb was spitting fuel at low throttle so I rebuilt it. Now it won't get fuel unless I squeeze the primer. It will run fine after I use the primer for about a minute or so then cuts out. Any ideas?
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
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.
 
Top