2014 Chevrolet Malibu Smells Like Gas

Common Causes of Gas Smells in Your 2014 Chevrolet Malibu and How to Address Them Safely

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Reviewed by
Bo Fader
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
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45% chance it's
Something else
The most common reasons a 2014 Chevrolet Malibu 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 2014 Chevrolet Malibu 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 steps should I take to diagnose the gas smell in my 2014 Chevrolet Malibu?

To effectively diagnose the gas smell in your 2014 Chevrolet Malibu, start with a systematic approach that prioritizes simpler checks before moving on to more complex assessments. Begin by inspecting the area under your vehicle for any visible leaks, as puddles or drips of gasoline can indicate a fuel system issue. Next, ensure that the fuel cap is securely tightened, as a loose or damaged cap can allow gas odors to escape. Following this, examine the fuel lines for any signs of cracks or damage, as these can lead to leaks. Pay special attention to the fuel injector O-rings, which may degrade over time and contribute to gas smells if worn. Additionally, inspect the fuel tank for any signs of corrosion or damage that could be causing the odor. If these initial checks do not reveal the source of the smell, it may be necessary to consult a mechanic who can conduct a more thorough inspection using specialized tools. By following this diagnostic approach, you can efficiently identify and address the cause of the gas smell in your vehicle.

What are the common causes of a gas smell in a 2014 Chevrolet Malibu?

When you detect a gas smell in your 2014 Chevrolet Malibu, it’s crucial to identify the underlying cause to ensure your safety and the vehicle's performance. One of the most common culprits is fuel leaks, which can occur due to damaged fuel lines or faulty fuel injectors. Inspecting these components for visible signs of wear or damage can help you pinpoint the issue. Additionally, problems with the evaporative emissions system, such as a malfunctioning charcoal canister or purge valve, can also lead to gas odors. A simple check of these parts can reveal if they are functioning correctly. Another frequent cause is a faulty fuel cap; if it’s loose, damaged, or missing, it can allow fuel vapors to escape. Make sure to tighten or replace the cap as needed. Furthermore, issues with fuel injectors, including leaks or malfunctions, can contribute to the smell, so examining them for any irregularities is advisable. Lastly, don’t overlook the exhaust system, as leaks in components like the exhaust manifold or pipes can sometimes produce a gas-like odor inside the cabin. By systematically checking these areas, you can effectively diagnose and address the source of the gas smell in your Malibu, ensuring a safer driving experience.

How urgent is it to address the gas smell in my 2014 Chevrolet Malibu?

Addressing a gas smell in your 2014 Chevrolet Malibu is not just a matter of convenience; it is a critical safety concern that requires immediate attention. Ignoring this warning sign can lead to severe consequences, including the risk of fire or explosion due to fuel leaks. A gas smell may indicate a range of issues, from something as simple as a loose gas cap to more serious problems like a malfunctioning fuel pressure regulator or a leak in the fuel system. Each of these issues poses its own risks, and the longer you wait to investigate, the greater the potential for costly repairs and safety hazards. Therefore, it is essential to prioritize this issue and seek a thorough inspection from certified technicians. By addressing the gas smell promptly, you not only ensure your safety but also maintain the integrity and performance of your vehicle, ultimately saving you time and money in the long run.

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