2007 Mitsubishi Eclipse Smells Like Gas

Common Causes of Fuel Odors in Your 2007 Mitsubishi Eclipse and Essential Safety Precautions

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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 2007 Mitsubishi Eclipse 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 2007 Mitsubishi Eclipse 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.

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 potential causes and diagnostic steps for a gas smell in a 2007 Mitsubishi Eclipse?

When dealing with a gas smell in your 2007 Mitsubishi Eclipse, it's essential to adopt a systematic diagnostic approach to identify the underlying issue effectively. Start with the simplest solutions, such as checking the fuel cap; ensure it is tightly secured and free from damage, as a faulty cap can easily allow gas vapors to escape. Next, conduct a thorough visual inspection of the vehicle, looking for any signs of fuel leaks around the fuel lines, injectors, and tank. If no obvious leaks are found, utilize an OBD-II scanner to check for error codes that may indicate problems within the fuel or emissions systems. Pay particular attention to the evaporative emissions system, inspecting components like the charcoal canister and purge valve for any signs of wear or leaks. Additionally, examine the exhaust system for potential leaks that could contribute to the gas smell. Finally, monitor your fuel consumption for any unusual changes, as this can provide further clues about the vehicle's fuel efficiency and potential issues. By following this structured approach, you can effectively diagnose and address the source of the gas odor in your Eclipse.

What could be causing my 2007 Mitsubishi Eclipse to smell like gas?

If you're experiencing a gas smell in your 2007 Mitsubishi Eclipse, it's essential to investigate the potential causes to ensure both your safety and the vehicle's functionality. One common issue could be a leaking fuel injector, which, if compromised, can release a strong gasoline odor due to improper fuel delivery. Additionally, inspect the fuel lines, as they may develop cracks or leaks over time, allowing fuel vapors to infiltrate the cabin. A loose, damaged, or missing gas cap is another frequent culprit, as it can permit fuel vapors to escape from the tank. Furthermore, problems with the evaporative emissions system, which is responsible for capturing and recirculating fuel vapors, can also lead to a gas smell if any components fail. Lastly, a leak in the fuel tank itself can result in gasoline fumes entering the vehicle's interior. It's crucial to address these issues promptly, and seeking the expertise of a professional mechanic can help accurately diagnose and resolve the source of the gas odor, ensuring your vehicle remains safe and reliable.

How urgent is it to address a gas smell in a 2007 Mitsubishi Eclipse?

Addressing a gas smell in your 2007 Mitsubishi Eclipse is not just a matter of convenience; it is a critical safety concern that requires immediate attention. Gas leaks can lead to catastrophic outcomes, including the risk of fire, which endangers both you and your passengers. Additionally, inhaling gasoline fumes poses serious health risks, such as dizziness, headaches, and nausea, which can escalate with prolonged exposure. Beyond the immediate dangers, neglecting a gas smell can result in further damage to your vehicle, leading to costly repairs down the line. Therefore, if you detect a gas odor, it is essential to act quickly. Start by checking for visible leaks, inspecting fuel lines, and ensuring that the gas cap is secure. If the smell persists, it is advisable to consult a professional mechanic to accurately diagnose and resolve the issue, ensuring your safety and the longevity of your vehicle.

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2007 Mitsubishi Eclipse Gas Smell Issues & Repairs