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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System - 3.5L) >> Evaporative Emission System >> How to Detect Fuel Vapor Leakage >> Without Consult-II

Without Consult-II

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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: Attaching EVAP Service Port Adapter To EVAP Service Port
    G02886114Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Apply battery voltage to between the terminals of EVAP canister vent control valve to make a closed EVAP system.
    Fig 2: Identifying EVAP Canister Vent Control Valve
    G02886115Courtesy 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 ".
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