Blue/ white smoke ISX15

[Therealarw]

Hi everyone,

I currently have a truck that is giving me some issues.. I have a Cummins ISX2350 that has NOT been deleted and the driver has been telling me that it's puffing blue and white smoke out of the exhaust and will regen quite often. It had an injector code so I had just replaced it just to make sure because blue and white smoke would be raw diesel right? I've also heard of anti freeze being a possible issue to? Where would I start with something like this? ECM hasn't been altered in anyway and neither is the exhaust. No other codes are active by the way. Thanks in advance for the help also Rawze Community.