F 150 Heritage 4WD Pickup V8-5.4L CNG VIN M (2004)
Fuel Filter: Description and Operation
Natural Gas Fuel System
HIGH PRESSURE FUEL FILTER
Fuel Filter
The high pressure fuel filter (Figure 83) is used to protect the engine fuel system components. A natural gas coalescing and particulate filter is positioned
on the high pressure side of the fuel system just prior to the pressure regulator. The filter is part of the regulator assembly. The filter can be disassembled
to service the element. The drain plug on the bottom of the housing can be removed to drain any water that accumulates.
