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Blog / Car Safety Tips

What Should You Do If Your Car Smells Like Gas?

2023 QX60 Car Interior | Greenwich, CT

If you smell gas when you're driving, this is a sign of trouble. The smell is caused by a leak of some type and can be either a minor or major problem. If you're in Greenwich, CT, and your car smells like gas, your INFINITI dealer can help you. These are a few of the potential causes of the problem that we can fix for you.

Faulty Gas Cap

The gas cap's main functions are to control the pressure in the fuel system and to prevent fuel vapors from escaping the tank. The cap is designed to screw in tightly and has a seal that prevents air from entering the tank. Two common causes of a strong gas smell are a loose cap or damage to its seal. In either case, gas vapor will escape.

If there's a fault with the cap, air can enter your fuel tank and reduce the pressure in the system. The fuel system requires high pressure to draw fuel into the fuel injectors for combustion. If the pressure in the fuel system is reduced, you could develop additional engine problems. Air in the fuel system can also create a bubble that blocks the flow of fuel, and your engine won't start. We'll examine the cap and its seal and replace them if necessary.

Loose Spark Plugs

A spark plug is attached to each cylinder, and it's responsible for igniting the contents of the cylinder at a precise moment. Fuel and air mix in the intake manifold, and once they're correctly mixed, the fuel-air mixture is drawn into each cylinder. The fuel-air mixture is compressed and then ignited to create combustion.

The plugs are screwed into their housings but can become loose over time. Your engine and its components move very slightly as you drive, and these subtle movements can allow a gap to open between the cap and its housing. When this happens, fuel vapor will escape the cylinder and waft into your cabin. We'll test each plug and securely refit them.

Fuel Leak

A leak in the fuel system can have serious consequences, as fuel is highly flammable. Your fuel system is designed to the highest safety levels, but it requires regular services to ensure that all of its components are in good condition. As time passes, seals can wear, components can rust, and fuel can leak out.

Fortunately, a fuel leak is usually easy to detect due to its strong smell. If you see a puddle of liquid underneath your car that smells like gas, it's important to call our service department ASAP. Our technicians can safely examine the system for you and help permanently repair the leak.

If you suspect a fuel leak, call us right away at DARCARS INFINITI of Greenwich.

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