• Ashley Bradish

Why Does My Car Smell Like Gas?

Updated: 8 hours ago

Are you smelling gas in your car? Whether it's constant or on-and-off, driving a car that smells like gas can be dangerous.

Gas leaks are the leading cause of vehicle fires. When the leaking gas reaches a hot engine, it ignites.

There are several reasons why your car can smell like gas, but here are the most common causes:

Issues with Your Gas Cap

If you smell gas in your car, the first thing you should always check is the gas cap. If that is the problem, it's an easy fix. The gas cap could be loose, broken, or missing, allowing the gas to leak out as a vapor into your cabin.

A loose gas cap can occur after you or an attendant pumps gas and does not put it back on correctly. Adjusting or replacing the gas cap should solve the problem and stop the smell. If not, there is a larger issue inside the vehicle.

Damaged Fuel Tank and Fuel Lines

There could be gas leaking from a punctured fuel tank or broken fuel lines.

Like every other part of your vehicle, the fuel tank and fuel lines get worn out, so no vehicle is immune to leaks. The rubber from the fuel lines can crack and corrode over time. Besides the smell, another sign of a gas leak is a puddle of gas under the vehicle. You'll also see your fuel gauge dropping fast.

Good and Bad Sparkplugs Comparison

Loose or Broken Spark Plugs

Your vehicle's spark plugs are a crucial part of the combustion chamber. If they are not tightened to the correct torque, they will become loose. If the washer cracks, fumes will leak into the engine or ventilation system.

Exhaust Fumes

Exhaust fumes come from burning gas to accelerate your vehicle. The fumes are supposed to travel through the exhaust system and come out of the tailpipe. But if there is a leak, especially before the catalytic converter, you could start to smell gas.

Fuel Injector Leaks

Although it is not common, leaks can come from the fuel injector. These leaks come from a damaged O-ring. The O-ring is a seal that prevents gas from escaping the combustion chamber.

If you can only smell gas when you start your car, it is most likely a gas leak somewhere in the vehicle. It could be coming from the engine, the exhaust system, or the fuel line.

If you smell gas in your car, call your local mechanic immediately.

Quality Automotive technicians will be happy to assist you with any fuel-related issue. Give us a call at 908-362-9555 or request an appointment here.

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Home Service Oil Company. (2019, October 24). 7 Reasons Why Your Vehicle Might Smell Like Gasoline. Home Service Oil Company. Retrieved April 8, 2022, from https://www.hsoil.com/reasons-car-smells-like-gasoline.html