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Fuel ManageMent SySteM
78
High Pressure Fuel System Flow
• Fuel is supplied to the high pressure fuel injection pump
after being filtered by both the HFCM (horizontal fuel
conditioning module) and the engine mounted fuel filter.
• The high pressure fuel injection pump is gear driven
off of the camshaft gear at the rear of the engine.
• Once the high pressure fuel injection pump
pressurizes the fuel it is routed to two (2) high
pressure fuel rail supply tubes, one for each bank.
HIgH PReSSuRe Fuel SySteM
• The high pressure fuel rail supply tubes route the fuel to
the high pressure fuel rail located under the valve cover.
• The high pressure fuel rail inlet protrudes
through the valve cover spacer at the back of the
engine and oil is sealed by a rubber seal.
• The high pressure fuel rail routes fuel to each of the
four (4) fuel injectors through four (4) separate fuel
injector supply tubes all located under the valve cover.
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