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838 Views 4 Replies 2 Participants Last post by  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
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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...

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?
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