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Home >> Lincoln >> 2017 >> Navigator Select, RWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - General Information >> General Procedures >> Fuel System Pressure Test
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Fuel System Pressure Test

Special Tool(s)

GFD136588Courtesy of FORD MOTOR COMPANY
 Fuel Pressure Test Kit 310-D009 (D95L-7211A) or equivalent
WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.
WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.

  1. 1.

    Release the fuel system pressure. Refer to: Fuel System Pressure Release .

  1. 2.

    Disconnect the battery ground cable. Refer to: Battery, Mounting and Cables .

  1. 3.

    Remove the engine appearance cover.
GFD135100Courtesy of FORD MOTOR COMPANY

  1. 4.

    Remove the fuel injection pump noise insulator.
GFD135196Courtesy of FORD MOTOR COMPANY

  1. 5.

    Disconnect the fuel jumper tube-to-high pressure pump quick release coupling. Refer to: Quick Connect Coupling .

  1. 6.

    Install the Fuel Pressure Test Kit between the fuel jumper tube and the high pressure pump.
GFD136589Courtesy of FORD MOTOR COMPANY

  1. 7.

    NOTE: The FPCM electrical connector was previously disconnected to release the fuel system pressure and must be reconnected to test the fuel system pressure.

    Reconnect the FPCM electrical connector.

  1. 8.

    Connect the battery ground cable. Refer to: Battery, Mounting and Cables .

  1. 9.

    NOTE: Carry out a KOEO visual inspection for fuel leaks prior to completing the fuel system pressure test.

    Test the fuel system pressure to make sure it is within the specified range. Refer to Specifications .

  1. 10.

    NOTE: Open the drain valve slowly to relieve the fuel system pressure. This may drain fuel from the system. Place fuel in a suitable container.

    Upon completion of the fuel system pressure test, open the drain valve on the Fuel Pressure Test Kit and relieve the fuel system pressure.

  1. 11.

    Remove the Fuel Pressure Test Kit and reconnect the fuel jumper tube-to-high pressure pump quick release coupling. Refer to: Quick Connect Coupling .

  1. 12.

    NOTE: It may take more than one key cycle to pressurize the fuel system.

    Cycle the ignition key and wait 3 seconds to pressurize the fuel system. Check for leaks before starting the engine.

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