1990 Suzuki Sidekick Smells Like Gas

Common Causes of Fuel Smells in Your 1990 Suzuki Sidekick and How to Address Them Safely

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Reviewed by
Devin Cabugcal
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 1990 Suzuki Sidekick 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 efficiency.
  • 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 1990 Suzuki Sidekick 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.

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 could be causing the gas smell in my 1990 Suzuki Sidekick, and how should I diagnose it?

When diagnosing a gas smell in your 1990 Suzuki Sidekick, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex issues. Start by inspecting the gas cap, as a loose or damaged cap is a common culprit for gas odors. Ensure it is tightly sealed, as this can often resolve the problem without further investigation. Next, conduct a visual inspection of the fuel system, looking for any signs of leaks, such as wet spots or drips under the vehicle. Pay close attention to fuel lines, injectors, and the fuel tank, as these components can develop leaks over time. If the gas smell persists, examine the exhaust system; a strong gas odor from the exhaust may indicate an improper air-fuel mixture or issues with the emissions control system, such as a malfunctioning catalytic converter. If these steps do not reveal the source of the smell, it may be time to consult a professional mechanic for a thorough inspection. By following this diagnostic approach, you can effectively identify and address the cause of the gas smell in your Suzuki Sidekick.

What could be causing the gas smell in my 1990 Suzuki Sidekick?

If you're experiencing a gas smell in your 1990 Suzuki Sidekick, it's crucial to investigate the underlying causes to ensure both your safety and the vehicle's performance. One common issue could be a malfunctioning fuel pressure regulator or fuel sensor, which may lead to an excess of raw fuel entering the system. Additionally, consider whether you've accidentally spilled fuel during refueling or overfilled the tank, as these situations can create noticeable odors. Leaks in the fuel system, including the fuel lines, tank, or injectors, are also significant culprits that can lead to gas smells inside the cabin. Another factor to examine is the fuel mixture; if it's too rich, it can produce an excess of unburned fuel, contributing to the odor. Furthermore, issues with the exhaust system, such as a failing oxygen sensor or degraded seals, can allow exhaust fumes to infiltrate the vehicle, mimicking a gas smell. Lastly, be aware that a gas smell could indicate the presence of carbon monoxide, which poses serious health risks and requires immediate attention. By systematically checking these areas, you can identify the source of the gas smell and take appropriate action, whether that means a simple fix or consulting a professional mechanic for a thorough inspection.

How urgent is it to address the gas smell in my 1990 Suzuki Sidekick?

Addressing the gas smell in your 1990 Suzuki Sidekick is not just a matter of comfort; it is a critical safety concern that requires immediate attention. The presence of a gasoline odor can indicate a fuel leak, which poses a significant fire hazard. While temporarily driving with the windows down may alleviate the smell, it is essential to recognize that this is merely a short-term solution. Common culprits behind a gas smell include a faulty gas cap, fuel injector leaks, or issues with the fuel lines and tank. A simple first step in your DIY troubleshooting is to inspect the gas cap for any signs of damage or improper sealing, as a compromised cap can lead to vapor leaks. If you notice any wear or if the cap does not fit securely, replacing it could resolve the issue. Ignoring these symptoms could lead to more severe problems, including engine damage or safety risks while driving. Therefore, it is crucial to act swiftly and thoroughly investigate the source of the gas smell to ensure your vehicle remains safe and operational.

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