F 150T XR 63P X 1064168 J
Engine starts and runs fine, but after a short while it runs out of fuel and sucks primer bulb empty.
Pump bulb back up and runs fine again but keeps doing same.
Replaced bulb with new Yamaha bulb, replaced all fuel line, and even replaced fuel tank.
Tank is well vented also.
Pulling my hair out looking for ideas!