Re: Yanmar 2gm2f no start after fueling
Install a squeeze bulb in the fuel line between your fuel tank and your first fuel filter. It will solve your priming problems unless you have a leak and should let you find the leak if you have one.
Just pump the bulb until it is hard then crack the fitting letting the fuel/air out until you get no air then close the fitting before releasing the bulb. Repeat as needed until all vent points are vented. Also check to see if you are getting fuel someplace it isn't supposed to be when you pressurize the system with the bulb.