Cummins starting ?
 

So this is my first Diesel truck . 2003 Dodge 2500 4x4 Cummins . im having a no start issue in the mornings . or aftrr it sits 6-10 hours . i just took it on a 1700 mile work trip . Did really great on the road . bit nneds a shot of starting fluid before and after work . i was working 12hr shits . m8dnights . so at 7am in the parking lot i had to spray a small shot in it to fire up .
.....any ideas .