FIXED: The DREADED Smoke on a Duramax: Part 2 of 2

I diagnose and fix exhaust smoke coming from my LLY Duramax. When in gear at a stop the truck was running rough and smoking. This is Part 2 of 2 where I replace Injector #4 (& fuel return line) I suspect is causing the issue.
The return line is a pain because they usually break in the injector... replacing it requires an new return line kit to all injectors on that bank + picking out the broken pieces from each of the 4 injectors! I show how I did it.
Thanks for watching & let me know if you have any questions!
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