250 Yamaha Fuel Injected Motor 2001

My Boat was running and then shuting down after about 400 yards around 7 months ago...I took to the Mechanic and he replaced OX sensors Low pump fuel pump sensors....It worked fine...Now after 4 tanks of gasoline it is doing it again any suggestions I replaced fuel primer bulb

[boats.net]

Check fuel filters for water or trash, need to run fuel pressure test on it.