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Home >> Infiniti >> 2003 >> FX35 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel System >> General Precautions

General Precautions

WARNING: When replacing fuel line parts, be sure to observe the following.
  • Put a "CAUTION: INFLAMMABLE" sign in the workshop.
  • Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.
  • Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
CAUTION:
  • Before removing fuel line parts, carry out the following procedures:
    • Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in safe area.
    • Release fuel pressure from the fuel lines.
    • Disconnect the battery ground cable.
  • Always replace O-rings and clamps with new ones.
  • Do not kink or twist tubes when they are being installed.
  • Do not tighten hose clamps excessively to avoid damaging hoses.

    Tighten high-pressure rubber hose clamp so that clamp end is 3 mm (0.12 in) from hose end.

    Tightening torque specifications are the same for all rubber hose clamps.

    Ensure that screw does not contact adjacent parts.

    Fig 1: Tightening Hose Clap
    G01176916Courtesy of NISSAN MOTOR CO., U.S.A.
  • After connecting the fuel tube quick connectors, make sure the quick connectors are secure.

    Ensure that the connector and resin tube do not contact any adjacent parts.

  • After installing tubes, make sure there is no fuel leakage at connections in the following steps.
    • Apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then check for fuel leaks at connections.
    • Start the engine and rev it up and check for fuel leaks at connections.
  • Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
  • For servicing "Evaporative Emission System" parts, refer to EMISSION SYSTEMS & SUB-SYSTEMS .
  • For servicing "On Board Refueling Vapor Recovery (ORVR)" parts, refer to ON BOARD REFUELING VAPOR RECOVERY (ORVR) SYSTEM .
    Fig 2: Identifying Fuel Connection Cross-Section
    G01176917Courtesy of NISSAN MOTOR CO., U.S.A.