[powerstroke02]

hard start when warm
starts fine when cold so the glow plugs must be good working order /ubbthreads/images/graemlins/shrug.gif what else could be causeing this, batteries shot.
also the truck has 93,000 miles

 

[GrampyJim]

Possibly high pressure oil or injector o-ring concerns. Possibly CMP. Possibly dragging starter - tough to say without actually seeing what's going on.

In the shop, I would check the integrity of the starter system... is rpm adequate to start the truck? If that's OK, scan codes... jot down any memory codes and fix any hard codes.

If there's still no cure, check ICP, IPR, VREF while cranking. ICP should be >600 PSI, IPR < 30% and VREF should be 4.5 volts or better. You might also check sensor rationality... KOEO, EBP, MAP and BARO should be within 1/2 PSI of each other...

HTH

 

[powerstroke02]

ok well it only does it once a month, most of the time, /ubbthreads/images/graemlins/shrug.gif after filling up with diesel

 

[GrampyJim]

I'd almost consider something with the NIB or even the DTRM n that case... this would be a concern in the tank... What happens that let's it eventually start?

 

[powerstroke02]

well i shut it off when i get to the station and then wait for thr glow plug light to go off and start it but it does not because i dont like to crank on it any longer then 20 sec. then what for the glow plug light to go off again and it starts right up the same thing happened ever time. but like i sayed it only happens one a month if that . /ubbthreads/images/graemlins/shrug.gif