2016 Mitsubishi Outlander Smells Like Gas

Identifying the Causes of Gas Smells in Your 2016 Mitsubishi Outlander and Essential Safety Measures

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Reviewed by
Andrew Hajjar
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 Mitsubishi Outlander 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 Mitsubishi Outlander 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.

When the fuel filter begins to clog, the engine suffers from fuel starvation. This will cause a significant reduction in power and may also cause a misfire. These conditions may be intermittent, or constant and worsen over time. As the issue progresses, the engine may being to stall immediately after starting, fail to start, hesitate under throttle, or stall at particular angles on hills.

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 initial steps to diagnose a gas smell in a 2016 Mitsubishi Outlander?

When faced with a gas smell in your 2016 Mitsubishi Outlander, it's crucial to adopt a methodical diagnostic approach. Start by checking for visible leaks around the vehicle; look for any puddles or wet spots that may indicate gasoline escaping. Next, inspect the fuel lines and connections under the hood, as damaged or loose fittings can often be the culprits behind the odor. Don’t overlook the fuel tank itself; any signs of leaks or damage here can lead to gasoline vapors escaping into the air. Additionally, examine the fuel injector for leaks, as this component is vital for proper fuel delivery and can contribute to the smell if malfunctioning. Lastly, take a closer look at the evaporative emissions control system, which is designed to prevent gasoline vapors from escaping. If you follow these steps and still detect a gas smell, it may be time to consult a qualified mechanic for a more thorough inspection. This structured approach not only helps in identifying the source of the problem but also ensures that you address the issue safely and effectively.

What are the common causes of a gas smell in a 2016 Mitsubishi Outlander?

When you notice a gas smell in your 2016 Mitsubishi Outlander, it's important to investigate the potential causes to maintain safety and vehicle integrity. A fuel leak is often the primary suspect, which can arise from damaged fuel lines or malfunctioning fuel injectors, resulting in a strong odor both inside and outside the vehicle. Another common issue could be related to the evaporative emissions system, which is designed to control fuel vapor release from the tank; any malfunction here can lead to noticeable gas smells. Additionally, a faulty fuel cap—whether it's loose, damaged, or improperly sealed—can allow fuel vapors to escape, contributing to the odor. It's also worth considering the exhaust system; leaks from components like the exhaust manifold or catalytic converter can emit gas-like smells. Lastly, engine performance problems, such as running too rich, can lead to an excess of fuel in the air-fuel mixture, causing a gas odor. Promptly addressing these issues is crucial, and if the smell persists, seeking the expertise of a qualified mechanic is recommended to ensure a thorough diagnosis and resolution.

How urgent is it to address the gas smell in my 2016 Mitsubishi Outlander?

When you notice a gas smell in your 2016 Mitsubishi Outlander, it is crucial to act swiftly due to the serious safety risks involved. Gas leaks can lead to catastrophic events such as fires or explosions, especially if they come into contact with any ignition source. Additionally, inhaling gas fumes poses significant health risks, including dizziness and nausea, which can escalate with prolonged exposure. Beyond safety concerns, neglecting this issue can result in further damage to your vehicle, leading to expensive repairs. For those inclined to take a DIY approach, it is essential to first ensure your safety by ventilating the area and avoiding any potential ignition sources. Inspecting the fuel lines and connections for visible leaks can be a good starting point, but if the smell persists or if you are unsure, seeking professional help is the best course of action to ensure both your safety and the integrity of your vehicle.

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