2007 Toyota Camry Smells Like Gas

Identifying Potential Causes of Gas Smells in Your 2007 Toyota Camry and Safety Precautions to Take

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Reviewed by
Aisha
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 Toyota Camry 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 Toyota Camry 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 steps to diagnose a gas smell in a 2007 Toyota Camry?

To effectively diagnose a gas smell in your 2007 Toyota Camry, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the area under the vehicle for any visible leaks, as this can quickly indicate a fuel system issue. Next, ensure that the fuel cap is securely tightened, as a loose or damaged cap is a common culprit for gas odors. If the smell persists, examine the fuel lines and connections for any signs of wear or leaks, tightening or replacing components as necessary. Don’t overlook the fuel injector O-rings, which can deteriorate over time and lead to gas leaks. Additionally, check the charcoal canister for cracks or damage, as it plays a crucial role in managing fuel vapors. Finally, consider the exhaust system, as leaks or damage here can also contribute to gas smells. If these steps do not resolve the issue, consulting a mechanic for a professional diagnosis is advisable to ensure your vehicle remains safe and functional.

What are the common causes of a gas smell in a 2007 Toyota Camry?

When you detect a gas smell in your 2007 Toyota Camry, it’s crucial to investigate the underlying causes to ensure your safety and the vehicle's performance. One of the most common culprits is a fuel leak, which can stem from damaged fuel lines, faulty fuel injectors, or even a cracked fuel tank. Inspecting these components for visible signs of wear or damage can help you pinpoint the issue. Additionally, a loose or damaged gas cap is often overlooked; ensuring that the cap is secure and in good condition can prevent fuel vapors from escaping. Another area to consider is the evaporative emissions control system, which includes parts like the charcoal canister and purge valve. If these components malfunction, they can release fuel vapors, contributing to the gas smell. Furthermore, faulty fuel injectors may leak fuel into the engine compartment, while issues with the exhaust system, such as a leaking manifold or damaged catalytic converter, can also produce a gas-like odor. If you notice a persistent gas smell, it’s advisable to conduct a thorough inspection or consult a qualified mechanic to address the issue effectively and maintain your vehicle's safety.

How urgent is it to address the gas smell in my 2007 Toyota Camry?

Addressing a gas smell in your 2007 Toyota Camry is not just a minor inconvenience; it is a critical safety issue that requires immediate attention. Ignoring this warning can lead to severe consequences, including the risk of fire or explosion due to gasoline leaks, which can ignite from even the smallest spark. Additionally, the health risks associated with inhaling gasoline fumes are significant, as they can cause dizziness, headaches, and long-term respiratory issues. For those who are inclined to take a DIY approach, it is essential to first ensure your safety by working in a well-ventilated area and wearing protective gear. Start by inspecting the fuel lines, connections, and the fuel tank for any visible signs of leaks or damage. If you detect any issues, it is advisable to replace the faulty components immediately. However, if the source of the smell is not easily identifiable, or if you are uncomfortable performing these checks, seeking professional assistance is crucial to prevent potential hazards and ensure your vehicle operates safely.

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2007 Toyota Camry Smells Like Gas: Causes & Solutions