MX13 EPA10

Hey guys truck has been sitting for almost 3 years.

2013 Peterbilt 386 with a Paccar MX13 epa10.

Got 2 engine codes that came on,

Dpf fuel enable actuator
Egr delta pressure


Could this happen from water in the fuel? Winter fuel from 3 yrs ago

 

It was not on immediately, came on after 20 minutes on the highway and sometimes it does not even come on.

 

Bump

 

It's creating a blue haze smoke from under the truck. I tried cleaning the 2 small tubes right after the egr sensor but lights came back on.

Are both lights related to the doser or 7th injector?

 

Is cleaning both the doser and 7th simple to do? What should be used to clean them. Peterbilt couldn't even pull any engine codes out everything was inactive. This is what comes on after driving for a bit and goes away when you shut the engine off and on.

 

They did a forced regen and removed the derate that's all. He saw the blue haze smoke and said injector is leaking never specified which.

The lights come on after driving for a bit they go away when you turn off engine and back on but come on shortly again. It did this for quite a while till the engine light for derate came on and would not go till dealer removed it.