Diesel in Oil

[Puhakid]

Got a 2003 dodge 5.9 Cummins with diesel in oil where do I start?

 

[Mike Wenrich]

No codes??? On the TDR forum I have read this is likely due to an injector or more than one spraying too much diesel. If not a run issue then it might be something else but it's not unheard of. The experts will likely help diagnose but also the TDR Forum is a good place for additional info. TDR short for Turbo Diesel Register.

 

[Travelin Ram]

Does it run on all 6, does it smoke excessively? Fuel wash down will have symptoms.

Absent that, leaking seals on the injection pump.