How Do You Know if You Need a New Gas Cap

Blog - Bad Gas Tank Cap Signs

May 13, 2021

Is Your Gas Tank Cap Bad? Signs It May Need to Exist Replaced

You remove your gas cap every time yous fuel up. But somehow, this very significant component is still often overlooked. A failing gas cap could impact motor functioning, fuel efficiency, and fuel menstruation if not replaced properly. Learn how to tell if your gas cap is bad and when information technology's fourth dimension for a replacement.

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What Does a Gas Tank Cap Do

Your gas tank cap seals your fuel tank and prevents water, dirt, debris, and other hazards from contaminating your gasoline supply. Since the cap is used so oftentimes, it can become worn and damaged over fourth dimension.

Your gas cap is too function of your vehicle'south evaporative emissions arrangement (EVAP). When fuel evaporates in your gas tank, your EVAP system collects and recirculates those fumes to keep harmful emissions from being released into the atmosphere. Even so, a bad gas tank cap throws a wrench in this procedure and could atomic number 82 to fuel and emission leaks along with other symptoms.

How to Tell if Your Gas Cap is Faulty

The cap does not tighten properly.

Ane of the near credible bad gas cap symptoms is having difficulty tightening or securing it properly to your gas tank. You may notice that the cap doesn't click when you plow information technology into place, or it might pop back open afterwards yous've attached it. If the gas cap doesn't tighten or seat properly, it may exist due to stripped rings or general wear and tear.

Your check engine lite comes on.

Staring at a newly lit bank check engine light can be scary. Fortunately, the consequence may be as simple every bit a bad gas tank cap. If you lot scan and receive an EVAP fault code or a bad gas cap lawmaking, this could mean your vehicle has an EVAP leak or a loose gas cap. Once a bad or failing fuel cap sets off your check engine lite, information technology can foreclose your auto from passing an emissions examination. It's all-time to replace your gas cap as presently equally possible.

You smell fuel while driving.

A loose, damaged, or misplaced gas cap can cause fuel vapors from the gas tank to leak, resulting in the singled-out olfactory property of gas coming from your vehicle. The escaping vapor non only makes driving uncomfortable, but information technology tin can as well pose a severe wellness risk. Additionally, gasoline is highly combustible and can ignite when triggered by a spark or fire source.

Common Questions About Bad Gas Tank Caps

Can a bad gas cap crusade stalling?

A stalling vehicle is more likely to be caused by a bad fuel pump or problems with a spark plug, the ignition, or the airflow. Additionally, transmission issues and electrical failures may crusade your vehicle to stall. So, will a bad gas cap cause a misfire? Not probable. Just if you practice feel your INFINITI stalling, nosotros recommend bringing your vehicle to an authorized INFINITI service center for a full diagnostic.

Can a bad gas cap cause bad fuel mileage? \

Decreased gas mileage can occur for several reasons, including a loose or failing gas tank cap. If your cap is missing, damaged, or improperly screwed on, the fuel in your tank can evaporate at a rapid rate. This might lead to poor fuel efficiency, released gas emissions that tin harm the environment, and more frequent trips to the gas station.

How to Exam if a Gas Cap is Bad

Making certain your gas tank cap is functioning properly is a pretty simple task. Use these guidelines to see if your INFINITI'due south gas cap is in working order or needs to be replaced.

• Inspect the cap carefully for physical harm.
• Ensure that your gas tank cap clicks and doesn't get loose once you screw it into your fuel tank.
• Pay attention to your fuel efficiency. If you notice a sudden decrease in gas mileage with no modify to your driving habits, check your gas cap to ensure that it is present and connected correctly.
• Check your car's codes. If your bank check engine lite has come up on recently and you receive a (P0455 or P0457) error code, a loose or faulty gas tank cap may be the problem.

There are many different types of fuel caps out at that place, then it's crucial to select the right replacement. If yous need a new gas tank cap, shop genuine INFINITI Parts online to ensure the right fit for your vehicle.

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