2017 Kia Sportage Smells Like Gas

Identifying the Causes of Gas Smells in Your 2017 Kia Sportage and Essential Safety Measures 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 2017 Kia Sportage 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 2017 Kia Sportage 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 steps should I take to diagnose the gas smell in my 2017 Kia Sportage?

To effectively diagnose the gas smell in your 2017 Kia Sportage, start with the simplest checks that can often reveal the source of the problem. Begin by inspecting the fuel cap; ensure it is tightly secured, as a loose or damaged cap can easily lead to gas odors. Next, look under the vehicle for any visible leaks in the fuel system, such as dripping fuel or wet spots, which can indicate a more serious issue. If no leaks are apparent, examine the fuel lines and connections for signs of wear or damage. Pay special attention to the fuel injector O-rings, as faulty O-rings can also contribute to gas smells. Additionally, inspect the charcoal canister in the evaporative emissions system, as damage or saturation here can cause odors. If you still cannot identify the source, consider checking the exhaust system for leaks or damage, and finally, inspect the fuel tank for any signs of leaks. If these steps do not resolve the issue, it may be time to consult a mechanic for a more thorough inspection. By following this diagnostic approach, you can systematically address potential causes of the gas smell in your Kia Sportage.

What could be causing a gas smell in my 2017 Kia Sportage?

If you're detecting a gas smell in your 2017 Kia Sportage, it's crucial to investigate the underlying causes to ensure your safety and the vehicle's performance. One of the most common issues is a fuel leak, which can stem from damaged fuel lines, faulty fuel injectors, or even a compromised fuel tank. Additionally, a loose gas cap can lead to fuel vapors escaping, so always check that it is securely tightened after refueling. Another potential culprit is a malfunction in the evaporative emissions system, designed to manage fuel vapors; if this system fails, it can result in noticeable gas odors. Furthermore, an exhaust system leak, particularly near the engine, may also produce a gas-like smell inside the cabin. Lastly, be mindful of overfilling your gas tank, as this can cause fuel to spill and create lingering odors. If you suspect any of these issues, it’s advisable to conduct a thorough inspection or consult a professional mechanic to accurately diagnose and resolve the problem.

How urgent is it to address the gas smell in my 2017 Kia Sportage?

Addressing a gas smell in your 2017 Kia Sportage is not just a matter of convenience; it is a critical safety concern that should be prioritized. Gas leaks pose significant risks, including the potential for fire or explosion, which can have devastating consequences. Additionally, inhaling gas fumes can lead to serious health issues, such as dizziness, headaches, and nausea, making it imperative to take action immediately. Ignoring this warning sign can also result in further damage to your vehicle, leading to more extensive and costly repairs down the line. Therefore, if you detect a gas smell, it is essential to investigate the source and seek professional assistance without delay. Taking these steps not only ensures your safety but also protects your investment in your vehicle.

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