As the title says 2005 Merc 50hp efi outboard on a 22' pontoon. While running at any speed the motor will starve for gas. If you squeeze the primer bulb 2-3 times it picks up again and runs.
I have changed the filter/seperator, replaced the primer bulb and hose assembly with OEM,replaced the check valve at the fuel tank, and checked / tested the tank pickup for leaks or cracks. It has a 30gallon tank with 10 gallons of gas in it.
While I was winterizing the motor it started to tick. It sounded like a valve train noise. But as soon as I squeezed the primer bulb the noise went away. Fuel pump?? Anyone have any ideas? Thanks in advance, Mark