871 oil mixing with fuel

[Starlight]

I have seen this before. Being 09 and having done the fuel sample it seems I see a conection between your truck and one I repaired a while back. On the one I did it was the injectors being bad. What had happen was the injector preload had lessened overtime with wear and allowed compression gasses to enter the fuel sytem through the injector when running. The preload was very low. They were so carboned up it caused a hard start and it had smoke as well. The fuel tanks were black as well as everything else in the system. All the injectors leaked on the injector leak test. Installed new injectors and problem was solved. Even ran smooth when before there was a slight miss and a minor hunt.