Have a 287B and pukes fuel back at you when filling. Is this a known issue? Vent hose plugged?
I don't know if it is a known issue for that model, but I have had that problem before. I'm pretty sure the vent hose is plugged. Dt
Had a ton of them never had one burp at me How many GPM is your pump? I wouldn't think it would be a vent tube but, tilt up the cab and have a look around I bet you'll find a pinched fill neck tube