What is the labor hours to replace eight injectors on a Turbo Diesel on 2006 Ford F-350 Super Duty

What is the labor hours to replace 8 injectors on a Turbo Diesel

Asked by for the 2006 Ford F-350 Super Duty
2 answers
Roughly 5 hours of labor. Depending on your labor rate - maybe $625 in labor?

What is the cause of all 8 injectors being needed simultaneously?
Around 5 hours. Normally all 8 injectors do not require replacement at the same time. What is the problem? Hard hot restart? Rough or misfire? Codes?