The Diesel Stop banner
1-1 of 1 Results
  1. 6.4L Power Stroke Engine and Drivetrain
    So my dad has a 2008 F550 6.4. When I go from a stop or low speeds to high speeds, at around 40mph the truck starts to hesitate. I’ll stay on 40-45 for about 10 seconds with the pedal firm to the ground. Even the turbo psi only goes to about 20psi. Then after those 10 seconds, it finally kicks...
1-1 of 1 Results