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E 150 V8-4.6L SOHC VIN W (2004)

Engine, Cooling and Exhaust > Engine > Tune-up and Engine Performance Checks > Fuel Pressure > Fuel Pressure Test Port > Component Information > Description and Operation > Gasoline Fuel System > Page 3370

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Fuel Pressure Test Port: Description and Operation
Natural Gas Fuel System

SCHRADER/SERVICE VALVE

schrader/service valve (if equipped) provides a service port to the low pressure fuel system. This valve is needed to relieve the pressure in the system
before and during service. This valve could also be used to monitor the pressure near the injectors during diagnostic procedures.

Engine, Cooling and Exhaust > Engine > Tune-up and Engine Performance Checks > Fuel Pressure > Fuel Pressure Test Port > Component Information > Description and Operation > Gasoline Fuel System > Page 3370

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