2016 INFINITI QX50 Smells Like Gas

Addressing Gas Smells in Your 2016 INFINITI QX50 and Safety Measures to Implement

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
0%
40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 2016 INFINITI QX50 smells like gas are the gas cap, the fuel system, or the emissions control system.
  • Gas Cap: A loose or damaged gas cap can cause fuel vapors to escape, triggering the check engine light and potentially affecting fuel system pressure.
  • Emissions Control System: A faulty emissions control system can lead to increased hydrocarbon emissions and trigger the check engine light due to malfunctioning components like the EGR valve or O2 sensors.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2016 INFINITI QX50 smells like gas?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.

» LEARN MORE: How to tell if your catalytic converter is failing

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.

For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.

What are the potential causes and diagnostic steps for a gas smell in a 2016 INFINITI QX50?

When dealing with a gas smell in your 2016 INFINITI QX50, it's crucial to take a methodical approach to diagnose the issue effectively. Begin by visually inspecting the fuel system for any signs of leaks, paying close attention to the fuel lines, injectors, and fuel tank, as these are common culprits. A simple yet often overlooked cause could be a faulty fuel cap; ensure it is tightly secured, as a loose or damaged cap can lead to gas vapors escaping. Next, check the exhaust system for any leaks or damage, which can also contribute to the gas odor. Utilizing a diagnostic scanner to check for error codes related to the fuel system or emissions components can provide further insights into potential problems. If these preliminary steps do not uncover the source of the smell, it may be wise to consult a professional mechanic for a comprehensive inspection. By following this structured diagnostic approach, you can effectively identify and resolve the gas smell issue, ensuring both safety and optimal performance of your vehicle.

What could be causing my 2016 INFINITI QX50 to smell like gas?

If your 2016 INFINITI QX50 is emitting a gas smell, it’s crucial to identify the underlying issue to ensure your safety and the vehicle's performance. One common culprit could be a fuel leak within the fuel system, which can occur due to damaged lines or connections. Additionally, a faulty fuel injector may not seal properly, leading to fuel escaping and creating a noticeable odor. Another potential source is the evaporative emissions system; if there’s a leak in this system, it can allow fuel vapors to escape into the cabin. Don’t overlook the gas cap, as a loose or improperly sealed cap can also release fuel vapors. Lastly, issues with the exhaust system, such as leaks or a malfunctioning catalytic converter, can contribute to the gas smell. Addressing these problems promptly is essential, and while some DIY checks can be performed, consulting a qualified mechanic is advisable for a thorough diagnosis and repair.

How urgent is it to address the gas smell in my 2016 INFINITI QX50?

Addressing a gas smell in your 2016 INFINITI QX50 is not just a matter of convenience; it is an urgent safety concern that should be prioritized. Gas leaks pose a significant risk of fire or explosion, particularly in the confined space of a vehicle, making immediate action essential. Additionally, inhaling gas fumes can lead to serious health issues, including dizziness, headaches, and nausea, which can escalate with prolonged exposure. Beyond the immediate dangers to your health and safety, neglecting this issue can result in further damage to your vehicle, leading to expensive repairs down the line. Therefore, if you detect a gas smell, it is crucial to investigate and resolve the issue as soon as possible to protect yourself, your passengers, and your investment in your vehicle.

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2016 INFINITI QX50 Gas Smell: Causes & Solutions | RepairPal