My truck sometimes don't have the power it should when accellarating. Seems like a clogged fuel filter. It's not. Possily fuel pump? Which test should be done first, fuel pressure? What should it be before injector pump?
Art

Have you changed the oil and filter recently? Is the oil level up to the "FULL" mark? Here's a link that may help:

https://www.askmehelpdesk.com/cars-t...ml#post1415281

Also, read the other links under the Diesel section of the Sticky.