How long does a fuel tank cap last?

Having the right amount of gasoline in your car is vital to starting and driving your car. Each of the components in the fuel system plays a vital role in keeping your vehicle running properly. The filler neck of the gas tank runs on the side of the car, and this is where you will fill in gasoline. At the top of this filler is the fuel tank cap, which helps keep water out of the gas tank. This part of the car is used constantly, which eventually leads to its damage.

In most cases, the fuel tank cap on a vehicle has a seal under the threads. This seal helps keep moisture in the gas tank. Over time, the seal will begin to break down due to wear. Usually the seal starts to dry out and disintegrates. Lack of this seal on the gas tank cap will result in more moisture entering the gas tank and damaging the engine. Gas caps are rated for approximately 100,000 miles. In some cases, the gas cap wears out quickly due to abnormally harsh conditions.

Taking the time to inspect the fuel tank cap will help you figure out if there are any issues that need to be addressed. If you notice that the seal is broken or the threads on the cap are torn off, you will need to replace the filler cap.

Below are some points to pay attention to when it's time to replace the fuel tank cap.