LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (3 Of 3) >> Periodic Maintenance >> EVAP Leak Check >> Inspection >> Without Consult
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Without Consult

  1. Install EVAP service port adapter [commercial service tool: (J-41413-OBD)] and pressure pump to EVAP service port.
    GNSDB7095Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: If vacuum delay valve does not have EVAP service port, remove vacuum delay valve and install EVAP service port [commercial service tool: (Part No. 149393S500)] instead.
  2. Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.
  3. 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/cm 2 , 0.2 to 0.4 psi).
  4. Remove EVAP service port adapter [commercial service tool: (J-41413-OBD)] and hose with pressure pump.
  5. Locate the leak using a leak detector [commercial service tool: (J-41416)]. Refer to System Description .
    GNSDB5679Courtesy of NISSAN NORTH AMERICA, INC.
scientia non olet · About LEMON Manuals