This is not an injector issue this is usually wastegate on the turbo acting up most of the time you need a turbo with it but it's not injector for sure.
This truck is 2013 d13 with ishift. Just does it mainly on a cold start during warm up once temp temperature reaches 172 it stops.
90% of the time this is how it happens sometimes you can see smoke coming out the back like puffs and ussually the fix all the time has been replacing the turbo and it takes care of it.
Mine started doing that during warm up right after brand new turbo was put on. Vokvo in Rochester has ran tests on my turbo multiple times and everything is checking out ok. My fuel economy has been garbage ever since this turbo and new egr valve was put on last year. 6.3 mpg average
Not saying it’s turbo 100% but I have got bad parts before all the time standard has been really low now on the rebuilts.
Nas,what about this.on cold start little white smoke comes out from pipes After the egr opens the smoke goes away but i smell smoke odor when the egr opens what u think?
