DEF Issues
I drove a RAM 2500 diesel for 12 years until I upgraded to a pre-owned 2014 3500 diesel earlier this year. I knew nothing about DEF when I bought the "new" truck in March. My first introduction to D...
Forum Discussion
ShinerBock wrote:FishOnOne wrote:
I change the oil between 5,000 - 7,500 miles.
Oh, that is why. I can go about 5,000-6,000 miles between DEF fill ups. But no where near my 15k mile oil change intervals.FishOnOne wrote:
The 6.0 PSD I had never had the turbo touched, but I did replace the EGR valve at 80k miles and cleaned the EGR valve at 160k miles due to soot clogging the valve. The symptom is the truck would run sluggish and blow black smoke at low rpms.
Soot on the VGT vanes was a common problem with the 6.0L. So common in fact that even PowerstokeHub lists it as on of the issues of the 6.0L.
6.0L POWER STROKE PROBLEMSFishOnOne wrote:
I've yet to hear of any vains getting stuck on the 6.7 PSD. My '12 requires to have the truck running in Tow/Haul mode for it to work, but I don't like to run it in this mode while driving around town.
That is because the SCR/DEF system. Since your truck is equipped with a SCR/DEF system, it does not need to utilize the EGR as much to reduce NOx creating less soot. Since the 2007.5-2012 Cummins did not have an DEF system, the EGR was over utilized to meet emissions which created a lot of soot. That is of course gone with the addition of a SCR/DEF system on the 2013+ Cummins trucks. I thought I explained this to you a few times before?
Perhaps you did explain it but I'm fully aware how these systems work and the problems they have. Having said that, my '12 uses more EGR than my 05 Powerstroke, but the fix to the sticking vains was a simple one and that was to cycle them while the truck is idling. I can actually here it occurring on my '12 since the engine idles so quite.
