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Home >> Nissan-Datsun >> 2007 >> Altima Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing (Qr25DE) (Except For CALIFORNIA) >> On-Vehicle Maintenance >> Fuel Pressure >> Inspection >> Fuel Pressure Check
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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 L32 models do not have fuel return system.
  • Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
  1. Release fuel pressure to zero.
  2. Connect fuel tube (B) adapter to quick connector.
    Fig 1: Checking Fuel Pressure
    G04888054
  3. Turn ignition switch ON and check for fuel leakage.
  4. Start engine and check for fuel leakage.
  5. Read the indication of fuel pressure gauge.

    At idling: Approximately 350 kPa (3.57 kg/cm 2  , 51 psi) 

  6. If result is unsatisfactory, check fuel hoses and fuel tubes for clogging.

    If OK, Replace "fuel filter and fuel pump assembly". If NG, Repair or replace.

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