Skip the auto shop - Our mechanics make house calls

How Long Does a Fuel Filler Cap Last?

Fuel Filler Cap

Having the right amount of gas in a car is vital in cranking and running the vehicle. Each of the components in the fuels system play a vital role in ensuring that the car runs as it should. The filler neck of the gas tank runs to the side of the vehicle and is where you will put in your gas. On the top of this filler neck is the fuel filler cap, which helps to keep water out of the gas tank. This part of the car is used on a constant basis, which is what leads to it becoming damaged over time.

In most cases, the fuel filler cap on a vehicle will have a seal under where the threads are attached. This seal helps to keep the moisture out of the gas tank. As time goes by, the seal will begin to deteriorate due to wear and tear. Usually, the seal will begin to dry out and will break apart. Not having this seal on the gas cap will lead to increased amount of moisture getting into the gas tank and wreaking havoc on the engine. Gas caps are designed to last for about 100,000 miles. In some cases, the gas cap will deteriorate at a rapid rate due to abnormally harsh conditions.

Taking the time to inspect the fuel filler cap on occasion will allow you to figure out if there are any issues that need to be addressed. If you notice that the seal is broken or if the threads on the cap are stripped, then a fuel filler cap replacement will be needed.

The following are some of the things to look for when it is time to replace the fuel filler cap.

  • The Check Engine Light comes on and stays on
  • The car will not pass an emissions test
  • The seal on the cap is broken or missing
  • The cap is completely missing

Noticing the signs that the fuel filler cap is damaged and acting quickly can help to reduce the amount of damage that is done.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: I had a fuel pump,filter,and the gas tank cleaned and lined in my 1985 Cadillac Seville the car is surging it cuts off but crank r

Hello, thank you for writing in. The vehicle may be experiencing a wide variety of issues. Considering the age of the vehicle, the list can get even more extensive. Unfortunately, this is going to be a process of elimination until...

Q: How do I use the fuel gauge?

The fuel gauge is located on your instrument control panel, and lets you know how much gas is left in the fuel tank. On one end of the gauge is an F, which stands for full. On the other side...

Q: Two mechanics have not been able to repair misfire.

Hi there. Check the intake for a possible vacuum leak around the cylinder 4. If there is no vacuum leak around the cylinder number 4, then there could be a burned valve. Check the compression on all of the cylinders...