1992 Chevrolet Blazer Smells Like Gas

Diagnosing Fuel Odor Issues in Your 1992 Chevrolet Blazer and Essential Safety Measures to Take

Find Repair Location
Reviewed by
Andrew Hajjar
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 1992 Chevrolet Blazer 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 1992 Chevrolet Blazer 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 1992 Chevrolet Blazer?

When diagnosing a gas smell in a 1992 Chevrolet Blazer, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by visually inspecting the area beneath the vehicle for any obvious signs of gasoline leaks, such as dripping fuel or wet spots around the fuel tank and lines. Next, carefully examine the fuel lines for any cracks, holes, or loose connections that could be contributing to the odor. If these initial checks do not reveal the source, proceed to inspect the fuel injector for leaks, as well as the fuel tank for any signs of damage. If your Blazer is equipped with a carburetor, it’s also important to check it for potential leaks. Additionally, assess the fuel pump for any malfunctions that might be causing the gas smell. Finally, ensure that the evaporative emissions control system is functioning correctly, as issues here can also lead to a noticeable gas odor. By following this diagnostic approach, you can effectively identify and address the source of the gas smell in your vehicle.

What are the common causes of a gas smell in a 1992 Chevrolet Blazer?

When you detect a gas smell in your 1992 Chevrolet Blazer, it’s crucial to investigate the underlying causes to ensure your safety and the vehicle's integrity. One of the most common culprits is a leaking fuel injector, which can emit gas vapors and create a strong odor inside the cabin. Additionally, inspect the fuel lines for any cracks or damage, as these can lead to significant fuel leaks. The fuel tank itself may also be compromised; a damaged or leaking tank can be a serious source of gas fumes. Another area to check is the charcoal canister, part of the evaporative emissions control system, which can malfunction and contribute to the smell. Lastly, don’t overlook the gas cap; if it’s not sealing properly, it can allow fumes to escape. Addressing these issues promptly is essential not only for your vehicle's performance but also for your safety on the road.

How urgent is it to address the gas smell in my 1992 Chevrolet Blazer?

Addressing a gas smell in your 1992 Chevrolet Blazer is not just a matter of convenience; it is an urgent safety concern that should be prioritized. Gas leaks can create a significant fire hazard, putting both you and your vehicle at risk. Additionally, inhaling gas fumes can lead to serious health issues, including dizziness, headaches, and nausea, which can impair your ability to drive safely. Furthermore, ignoring the smell could exacerbate the problem, leading to more extensive damage to your vehicle's fuel system and resulting in expensive repairs down the line. Therefore, it is essential to take immediate action if you detect a gas smell in your Blazer, 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.