Ford 7.3L Powerstroke Excessive Black Smoke
Problem: Several things could be causing black smoke in your 7.3 Powerstroke:
Cause: Dirty air filter (causing a restriction in the air inlet system)
Solution: Check the air filter and replace it if needed.
Cause: Incorrect fuel spray pattern or extra fuel dripping out of the injector (causing the ratio of fuel to air in the combustion chamber to be too high)
Cause: Stiction in the turbo (causing lack of boost pressure)
Solution: Treat with Stiction Eliminator
The contents of HotShotsSecret.com, such as text, graphics, images, and other material contained on the Diagnose Your Diesel section are for informational purposes only. Always seek the advice of your mechanic or other qualified professional with any questions you may have regarding your vehicle’s condition.