Acura CL Smells Like Gas

Common Causes of Fuel Odors in Your Acura CL and Essential Safety Precautions to Take

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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
0%
45% chance it's
Something else
The most common reasons a Acura CL 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 Acura CL 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.

Troubleshooting Gas Smell in an Acura CL

When faced with a gas smell in your Acura CL, it's essential to adopt a methodical diagnostic approach to pinpoint the source of the issue. Start by checking the fuel cap; ensure it is securely tightened, as a loose cap can lead to gas vapors escaping. Next, inspect the fuel system for any visible leaks, focusing on the fuel lines, tank, and injectors. If these initial checks do not reveal the problem, turn your attention to the EVAP system, which is crucial for containing fuel vapors. A malfunction here can contribute to the odor. Additionally, examine the exhaust system for leaks that might allow exhaust fumes to enter the cabin, as this can also mimic a gas smell. If the issue persists, consider having the engine evaluated for a rich fuel mixture or other mechanical problems. By following this structured approach, you can effectively troubleshoot the gas smell in your Acura CL and take the necessary steps to resolve it.

What Could Cause a Gas Smell in an Acura CL?

When you detect a gas smell in your Acura CL, it’s essential to understand the common problems that could be at play. A fuel leak is often the primary culprit, which can stem from various components such as fuel lines, injectors, or even the fuel tank itself. This situation is particularly dangerous, as gasoline is highly flammable, necessitating immediate investigation. If the odor is noticeable while driving or after parking, it may indicate a leak in the fuel injection line, which should be checked without delay to prevent hazardous gas accumulation. Additionally, residual fumes from a recent refueling or minor spills can contribute to the smell, typically dissipating on their own but still warranting attention. Other potential sources include oil leaks that may drip onto the exhaust system, creating a burning smell that can be mistaken for gasoline. Addressing these issues promptly not only ensures your safety but also helps maintain the overall health of your vehicle. If you're considering a DIY approach, start by inspecting the fuel lines and connections for any visible leaks, and check for any signs of oil on the exhaust components.

What Should You Do If Your Acura CL Smells Like Gas?

If you notice a gas smell in your Acura CL, it is crucial to act quickly, as this could indicate a serious fuel leak or malfunction in the fuel system, both of which pose significant safety risks. Ignoring this issue can lead to dangerous situations, including the risk of fire or engine damage. Start by thoroughly inspecting your vehicle for any visible signs of fuel leaks, such as puddles or stains beneath the car. Pay particular attention to the fuel injection line, as leaks in this area can often go unnoticed but may emit a strong gas odor. If you do not find any obvious leaks, consider the possibility of a malfunctioning fuel pressure regulator, which can also cause a gas smell without visible evidence. Given the potential hazards associated with fuel leaks, it is advisable to seek professional assistance if you suspect any issues. A qualified technician can accurately diagnose the problem and ensure your vehicle is safe to drive, helping you avoid costly repairs and ensuring your safety on the road.

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