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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (5.6L) (Except Hybrid) >> Removal And Installation >> High Pressure Fuel Pump And Fuel Hose >> Removal and Installation >> Installation

Removal and Installation: Installation

CAUTION: Do not reuse O-rings or washers.
  1. Install O-ring to high pressure fuel pump. When handing new O-ring, paying attention to the following caution items:
    CAUTION:
    • Do not reuse O-ring.
    • Handle O-ring with bare hands. Never wear gloves.
    • Lubricate O-ring with new engine oil.
    • Never clean O-ring with solvent.
    • Check that O-ring and its mating part are free of foreign material.
    • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, never insert it quickly into front cover.
    • Insert new O-ring straight into front cover. Never decenter or twist it.
  2. Install low fuel pressure sensor.
    CAUTION: Do not reuse washer.
  3. Install fuel feed hose.
    • Temporarily tighten mounting bolts (A) as shown in the figure, below.
      GNSJPBIA3865Z-865Courtesy of NISSAN NORTH AMERICA, INC.

      SYMBOL

      Engine front
  4. Install high pressure fuel pump and lifter to front cover.
    CAUTION: After removing lifter, replace lifter with a new one.
  5. Connect fuel hose and fuel feed tube (pump side) to high pressure fuel pump. Refer to Exploded View .
    CAUTION: When removing fuel feed tube (pump side), always replace fuel feed tube (bank side) together with fuel feed tube (pump side).
    NOTE:
    • Never allow the machined edge of the high pressure fuel pump to contact with gasket.
    • The gasket contact area must be free of dust and scratches.
    • Check that rotation stopper (A) of fuel hose contact fuel pump.
      GNSJSBIA0364Z-364Courtesy of NISSAN NORTH AMERICA, INC.
  6. Install acoustic absorbent. Refer to Exploded View .
  7. Tighten mounting bolts that are temporarily tightened in step 2.
  8. Connect harness connector to high pressure fuel pump.
  9. Install connector protector.
  10. Note the following, and connect quick connector to install fuel feed hose.
    1. Align the connector with the tube, then insert the connector straight into the tube until a click sound is heard.
    2. After connecting, check that the connection is secure by following method.
      • Visually confirm that the two retainer tabs are connected to the connector.
      • Pull the tube and the connector to check they are securely connected.
    3. Install quick connector cap (3) to quick connector connection.
      GNSJPBIA3922Z-922Courtesy of NISSAN NORTH AMERICA, INC.

      1

      : Centralized under-floor piping

      2

      : Fuel feed hose

      B

      : Under view
      • Install quick connector cap with arrow (A) on surface facing in direction of quick connector (fuel feed hose side).
      CAUTION:
      • Check that quick connector and fuel tube are securely fit into quick connector cap installation groove.
      • If quick connector cap cannot be installed smoothly, quick connector may have not been installed correctly. Check connection again.
  11. Install in the reverse order of removal after this step.
    CAUTION: After checking fuel leakage, maintain ten minutes of idling to bleed the fuel line.
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