Fixing your DPF Problems in a nutshell...

[Candiceecooley]

DEF System question!
I have a 2016 Cummins ISX that we just replaced the EGR cooler on and cleaned the whole system. Even after all this when we go to start it we get a strong resistance almost like maybe a vaper lock or too much compression. After letting it sit for awhile it will eventually start, sometimes it takes longer than others and sometimes fires right up. Also on the firewall side of the cooler below the downspout on the cooler (by the inspection)we are getting a little white smoke after it starts for a few minutes and then it is gone. Have you ran into anything like this, we are baffled.