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Home >> Nissan-Datsun >> 2008 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System - Introduction (Qr25DE)) >> Evaporative Emission System >> How to Detect Fuel Vapor Leakage >> Without Consult-III

Without Consult-III

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  1. Attach the EVAP service port adapter securely to the EVAP service port.
  2. Also attach the pressure pump with pressure gauge to the EVAP service port adapter.
    Fig 1: Connecting Pressure Pump To EVAP Service Port Adapter
    G04894451Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Apply battery voltage to the terminal of EVAP canister vent control valve (3) to make a closed EVAP system.
    • This illustration is a view from under vehicle
    • EVAP control system pressure sensor (1)
    • EVAP canister (2)
      Fig 2: Identifying EVAP Control System Pressure Sensor And EVAP Canister And EVAP Canister Vent Control Valve
      G04925106Courtesy of NISSAN MOTOR CO., U.S.A.
  4. To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2 , 0.2 to 0.4 psi).
  5. Remove EVAP service port adapter and hose with pressure pump.
  6. Locate the leak using a leak detector. Refer to "EVAPORATIVE EMISSION LINE DRAWING ".