Postby 3stagevtec » August 27th, 2011, 2:24 am
What voltage does the battery read in the morning, after an overnight rest? A reading of 13.3V suggests you measured the batt voltage just after driving the vehicle, which would give a false idea of it's current state.
Does the engine start properly when warm? If yes, then the glow plugs at fault.. If no, the the truck needs a service as biggy suggested.