Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2014 Infiniti QX50 Base, AWDFACTORY OEM SERVICE PROCEDURE

With Consult

To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port.

Fig 1: Checking EVAP For Leakage Using Pressure Pump
Courtesy of NISSAN NORTH AMERICA, INC.
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 "SYSTEM DIAGRAM ".

Fig 2: Identifying Leak Detector
Courtesy of NISSAN NORTH AMERICA, INC.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.