I have an 03 f350 with the 6.0 in it. Recently when I go to start,it starts then shuts right off. Then I crank again then nothing. Turn key off crank again starts then shuts right off,crank again then it runs fine all day. Sometimes I have to do this 4,5,6 times until it finally starts. Batteries are charged and truck is plugged in so it’s not the glow plugs.