How to Detect Fuel Vapor Leakage
WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- Never use compressed air or a high pressure pump.
- Never exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in EVAP system.
NOTE:
- Do not start engine.
- Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
WITH CONSULT
- Attach the EVAP service port adapter securely to the EVAP service port.
- Also attach the pressure pump and hose to the EVAP service port adapter.
- Turn ignition switch ON.
- Select the "EVAP SYSTEM CLOSE" of "WORK SUPPORT MODE" with CONSULT.
- Touch "START". A bar graph (Pressure indicating display) will appear on the screen.
- Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph.
- Remove EVAP service port adapter and hose with pressure pump.
- Locate the leak using a leak detector. Refer to "DESCRIPTION ".
WITHOUT CONSULT
- Attach the EVAP service port adapter securely to the EVAP service port.
- Also attach the pressure pump with pressure gauge to the EVAP service port adapter.
- Apply battery voltage between the terminals of EVAP canister vent control valve (3) to make a closed EVAP system.
- Fuel filler pipe (top of frame view) (1)
- EVAP control system pressure sensor (2)
- EVAP canister (4)
- Drain filter (5)
- : Vehicle front
- 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).
- Remove EVAP service port adapter and hose with pressure pump.
- Locate the leak using a leak detector. Refer to "DESCRIPTION ".