B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
Fuel Pump Pickup Filter: Description and Operation
FUEL FILTER
Contains four filtering or screen devices as follows:
1. A fine mesh nylon sock mounted on intake side of fuel pump
2. Filter/screen at fuel rail port of injector
3. Filter/screen at fuel inlet side of pressure regulator
4. Fuel filter between fuel pump and injector
NOTE: Fuel filter between fuel pump and injector is serviceable. Other three fuel filters are replaced as assemblies.