Is there a prepump fuel filter on a 2001 ford powerstroke diesel?

Answer 1

Not in its stock configuration. A common and very helpful mod is to remove the poorly designed fuel pickup system in the tank and replace it. Commonly called the "Hutch" mod, it removes the screen and mixing chamber in the pickup, extends the return away from the pickup foot, and closes of the auxiliary pickup. It also removes the quick disconnect connections between the tank and pump, which is a source of air getting into the system (VERY bad for the injectors). Because this mod removes the screen in the tank, it's a good idea to put a filter between the pump & tank so there is no chance of getting dirt in the pump intake, which could clog the pump or ruin it.