Ford 6.4L Powerstroke Excessive Black Smoke
Several things could be causing black smoke:
Problem: Dirty air filter (causing a restriction in the air inlet system)
Solution: Change air filter
Problem: 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)
If you have any questions about Powerstroke 6.4 excessive black smoke, feel free to contact one of our diesel experts.