John deere 5425 diesel?

i just changed the fuel filter and pimed entire system and has no air in the fuel but wen i go too start it , it goes into like a low power mode and is only running on 2 cyliders and eventually stalls if throttle is in the idle position so i turned it off and back on a couple times and eventually got it too fire off normal and ran fine for a couple hrs and then i went back out this morning and its doing it again so im a diesel mech , but im stumped on this one and would have too say its electrical thats causeing this but what ??? fuel shut off solenoid maybe bad ?