5.9 Cummins starting issue

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Cummins2500

Junior Member
Joined
Dec 4, 2013
Posts
9
Reaction score
2
Ram Year
2005
Engine
5.9 Cummins
I've got a 2005 Ram 2500 5.9 Cummins and I've recently noticed it seems to take longer to start when the truck is warmed up. I just got back from a trip where I drove 8200km and starting noticing it in the last 1000km. I did do an oil change before I left including changing out for a new fuel filter.

When I start the truck cold it seems to be normal, if its real cold it will sputter a bit but nothing out of the ordinary. Just once I have the truck warmed up and I shut it off to fill up with fuel or while in the drive thru, I start it back up and it cranks for maybe 3 or 4 seconds longer than usual, before it would start with probably only a second of cranking.

The batteries and starter are definitely good, the cranks are still very fast and healthy cranks just takes more to start.

Could this be something with the injectors? Lift pump? Fuel Pump? I'm not super experienced with trouble shooting diesels so any help would be appreciated!
 
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