Nissan Maxima Service and Repair Manual: Fuel pressure

Nissan Maxima Service and Repair Manual / Engine / Engine control system / Periodic maintenance / Fuel pressure

Inspection

FUEL PRESSURE RELEASE

With CONSULT

  1. Turn ignition switch ON.
  2. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT.
  3. Start engine.
  4. After engine stalls, crank it two or three times to release all fuel pressure.
  5. Turn ignition switch OFF.

Without CONSULT

  1. Remove fuel pump fuse located in IPDM E/R. Refer to FL-6, "Removal and Installation".
  2. Start engine.
  3. After engine stalls, crank it two or three times to release all fuel pressure.
  4. Turn ignition switch OFF.
  5. Reinstall fuel pump fuse after servicing fuel system.

FUEL PRESSURE CHECK

CAUTION: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

NOTE:

  •  Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because A35 models do not have fuel return system.
  •  Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick connector o-ring maintains seal ability.
  •  Use Fuel Pressure Gauge Kit [SST (J-44321)] and Fuel Pressure Adapter [SST (J-44321-6)] to check fuel pressure.
  1. Release fuel pressure to zero.
  2. Remove fuel hose using Quick Connector Release [SST (J-45488)]. Refer to FL-10, "Exploded View".
  • Do not twist or kink fuel hose because it is plastic hose.
  • Do not remove fuel hose (3) from quick connector.
  • Keep fuel hose connections clean.
  1. Install Fuel Pressure Adapter [SST (J-44321-6)] (2) and Fuel Pressure Gauge kit [SST (J44321)] (1) as shown in figure.
  • Do not distort or bend fuel rail tube when installing fuel pressure gauge adapter.
  • When reconnecting fuel hose, check the original fuel hose for damage and abnormality.
  1. Turn ignition switch ON (reactivate fuel pump) and check for fuel leakage.
  2. Start engine and check for fuel leakage.
  3. Read the indication of fuel pressure gauge kit [SST (J-44321)].
  • During fuel pressure check, check for fuel leakage from fuel connection every 3 minutes.

Nissan Maxima. FUEL PRESSURE CHECK

At idling : Approximately 350 kPa (3.57 kg/cm2, 51 psi)

  1. If result is unsatisfactory, go to next step.
  2. Check the following.
  • Fuel hoses and fuel tubes for clogging
  • Fuel filter for clogging
  • Fuel pump
  • Fuel pressure regulator for clogging
  1. If OK, replace fuel pressure regulator.

    If NG, repair or replace malfunctioning part.

  2. Before disconnecting Fuel Pressure Gauge kit [SST (J-44321)] and Fuel Pressure Adapter [SST (J- 44321-6)], release fuel pressure to zero.
    Periodic maintenance
    ...

    Evap leak check
    Inspection CAUTION:  Never use compressed air or a high pressure pump.  Never exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP system. NOTE:  Do not start en ...

    Other materials:

    Programming trouble-diagnosis
    If the HomeLink does not quickly learn the hand-held transmitter information: replace the hand-held transmitter batteries with new batteries. position the hand-held transmitter with its battery area facing away from the HomeLink surface. press and hold both the HomeLink and hand-hel ...

    In-vehicle sensor
    Removal and Installation REMOVAL Remove the instrument lower panel LH. Refer to IP-19, "Removal and Installation". Remove the in-vehicle sensor screw and the in-vehicle sensor. INSTALLATION Installation is in the reverse order of removal. CAUTION: Make sure that the asp ...

    Warning function symptoms
    Symptom Table WARNING FUNCTION MALFUNCTION NOTE: Before performing the diagnosis in the following table, check "WORK FLOW". Refer to DLK-9, "Work Flow". Check that vehicle is under the condition shown in "Conditions of vehicle" before starting diagnosis, and check each sy ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2026 Copyright www.nimainfo.com
    0.0102