Further research suggests the high pressure pump is at max duty cycle for 30 seconds during cranking. Having done the lift pump pressure and volume test the diagnostic flow chart takes you to fuel injector return rates as the next test. This seems to require a special tool worth $2000 dollars...
Hello all, new here, customer's truck higher mile 2015 Ecodiesel. Truck just got back from dealership, same problem as before. Basically, they told him to spray a little ether in it to get it going sooner. Unbelievable! Originally truck cranked a little longer than is normal during summer...