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Home >> Infiniti >> 2012 >> G25 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> Periodic 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 V36 models do not have fuel return system.
  • Use Fuel Pressure Gauge Kit [SST:(J-44321)] to check fuel pressure.
  1. Release fuel pressure to zero.
  2. Install the inline fuel quick disconnected fitting (A) between fuel damper (1) and injector tube.
  3. Connect the fuel pressure test gauge (quick connector adapter hose) (B) to the inline fuel quick disconnected fitting.
  4. Turn ignition switch ON and check for fuel leakage.
  5. Start engine and check for fuel leakage.
  6. Read the indication of fuel pressure gauge.

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

    Fig 1: Checking Fuel Pressure Using Fuel Pressure Test Gauge
    G08451733Courtesy of NISSAN NORTH AMERICA, INC.
  7. If result is unsatisfactory, check fuel hoses and fuel tubes for clogging.

    If OK, Replace "fuel filter and fuel pump assembly". Refer to "REMOVAL AND INSTALLATION ".

    If NG, Repair or replace malfunctioning part.