1997 Mercury Cougar Smells Like Gas

Diagnosing Fuel Odor Issues in Your 1997 Mercury Cougar and Essential Safety Precautions

Find Repair Location
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 1997 Mercury Cougar 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 1997 Mercury Cougar 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.

What are the potential causes for a gas smell in a 1997 Mercury Cougar, and how should I diagnose the issue?

When diagnosing a gas smell in your 1997 Mercury Cougar, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex issues. Start by inspecting the fuel system for any visible leaks, focusing on the fuel lines, injectors, and tank, as these are common culprits. Next, assess the condition of the gas cap; a loose or damaged cap can easily allow fuel vapors to escape. If these initial checks do not reveal the source, consider the functionality of the fuel injectors, as a malfunction can lead to noticeable odors and performance issues. Additionally, examine the evaporative emissions control system, including the charcoal canister and purge valve, for any signs of wear or leaks. Finally, inspect the exhaust system for any leaks that might contribute to the gas smell. By following this structured approach, you can effectively narrow down the potential causes and address the issue with confidence. If the problem persists or if you're uncertain about any step, consulting a qualified mechanic is advisable to ensure a thorough diagnosis and repair.

What could be causing my 1997 Mercury Cougar to smell like gas?

If your 1997 Mercury Cougar is emitting a gas smell, it’s crucial to identify the underlying cause to ensure both safety and vehicle performance. One common issue could be a leaking fuel injector, which allows gas fumes to escape into the engine compartment or cabin. Additionally, inspect the fuel lines for any cracks or damage, as these can lead to fuel leaks and a noticeable odor. Don’t overlook the gas cap; a loose or damaged cap can permit fuel vapors to escape, contributing to the smell. Furthermore, check for leaks in the fuel tank itself, as this can release gas fumes both inside and outside the vehicle. Lastly, problems with the evaporative emissions system, such as a malfunctioning charcoal canister or purge valve, can also result in gas vapors escaping. Addressing these issues promptly is essential, and while some DIY fixes may be possible, consulting a qualified mechanic for a thorough inspection is advisable to ensure safety and proper repairs.

How urgent is it to address the gas smell in my 1997 Mercury Cougar?

Addressing a gas smell in your 1997 Mercury Cougar is not just a matter of convenience; it is an urgent safety concern that should not be overlooked. The presence of a gasoline odor often indicates a leak, which can lead to catastrophic outcomes, including the risk of fire or explosion. Additionally, gasoline leaks can contaminate the environment and pose serious health risks to you and those nearby. Ignoring this warning sign can also result in further damage to your vehicle, leading to more extensive and costly repairs down the line. Therefore, it is imperative to take immediate action if you detect a gas smell in your Cougar, ensuring both your safety and the longevity of your vehicle.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

1997 Mercury Cougar Gas Smell Issues & Solutions | RepairPal