Econoline E350 1 Ton V8-5.4L CNG VIN M (1999)
Fuel Pressure Regulator: Description and Operation
The fuel pressure regulator is located on the inside of the LH frame rail just forward of the transmission support crossmember. It is part of an assembly
that includes the coalescer/filter. The fuel pressure regulator reduces the line pressure from tank pressure, 20,685 kPa (3000 psi) to line pressure, 655
kPa (95 psi).
Fuel pressure regulator heating is provided by two 3/8-inch taps from the existing heater supply and return hoses on the back of the engine. Two
high-temperature 3/8-inch ID heater hoses (packaged with the front low pressure fuel line) are used to connect the fuel pressure regulator to the tap
points on the engine heater hoses.
