Rajan Wilcox
A fuel cap is an important component of a car's gas system. It is used all the time, so it will need to be replaced eventually. A cracked cap or missing seal will allow fuel vapours to escape from the tank, which will cause fuel economy to drop and could even cause the car to catch fire. A fuel cap can last up to 50,000 miles, but it may need to be replaced sooner if it is not functioning properly. Replacing a fuel cap is a relatively inexpensive repair, costing between $74 and $80 on average.
| Characteristics | Values |
|---|---|
| How often to replace | Fuel caps can last up to 50,000 miles and longer if properly cared for |
| When to replace | As soon as possible if the cap is malfunctioning, cracked or missing a seal |
| Cost of replacement | Between $74 and $80 |
| Labour costs | Between $17 and $23 |
| Parts | $57 |
| Symptoms of a faulty fuel cap | Cap does not tighten properly, fuel smell from the vehicle, check engine light comes on |
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What You'll Learn
How to know if your fuel cap needs replacing
A fuel cap should be replaced when it is malfunctioning. This could be because it is cracked, has a missing seal, or is missing altogether. A malfunctioning fuel cap will cause fuel vapours to escape from the tank, which will eventually cause a drop in fuel economy. A missing fuel cap also runs the risk of burning down your vehicle.
A fuel cap that is not tightening properly is a common symptom of an issue. If you can smell fuel from your vehicle, this is another sign that your fuel cap may need replacing. If the check engine light comes on, this could also be related to the fuel cap.
You can repair pinholes, rust-outs, hairline cracks and holes up to 1/2" in diameter. However, if your fuel cap is cracked, it is best to replace it as soon as possible.
A fuel cap can last up to 50,000 miles, and sometimes longer if it is properly cared for. The average cost for a replacement is between $74 and $80, with labour costs estimated between $17 and $23, and parts priced at $57.
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How to replace a fuel cap
A fuel cap should be replaced when it is malfunctioning. This could be when it is cracked, missing, or not tightening properly. A malfunctioning fuel cap can cause fuel vapours to escape from the tank, which can cause a drop in fuel economy and, in some cases, a fire.
A fuel cap can last up to 50,000 miles if it is properly cared for. However, if it is malfunctioning, it should be replaced as soon as possible.
- Park your vehicle on a flat, hard surface and make sure the transmission is in park mode (for automatics) or in 1st gear (for manuals).
- Secure the vehicle by engaging the parking brake and placing wheel chocks around the front tires.
- Locate the fuel filler cap by opening the fuel door.
- Check the fuel filler cap for any exterior damage, such as cracks or stripped threads.
- Remove the fuel filler cap from the fuel filler neck and remove the cable from the fuel door.
- Check the gasket on the bottom of the fuel filler cap for any cracks or distortion.
- Clean the fuel filler neck threads with a clean cloth or paper towel.
- Replace the fuel cap, making sure that the threads on the cap and tank line up correctly and the cap is not skewed to the left or right.
- Hook up the cable to the fuel door and verify that there are no fuel vapours leaking from the fuel filler cap.
- Test drive the vehicle over different terrain to allow the fuel to slosh around and create vapour.
- Monitor the dashboard for any warning lights. If the engine light comes on, you may need to get the fuel system checked for electrical issues.
The average cost for a gas cap replacement is between $74 and $80, with labour costs estimated between $17 and $23 and parts priced at $57.
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How much does it cost to replace a fuel cap?
The fuel cap, also known as the fuel filler cap or gas cap, is a small plastic or metal part that sits at the top of the gas tank and secures its entry. It is used all the time, so you will have to get it replaced eventually. A malfunctioning gas cap needs to be replaced as soon as possible, as a cracked cap or missing seal will allow fuel vapours to escape from the tank, causing fuel economy to drop.
The average cost for a gas cap replacement is between $74 and $80. Parts are priced at around $57, while labour costs are estimated between $17 and $23. However, other sources suggest that the average cost is $27, with parts costing $15 and labour costing $12. This variation may be due to the make and model of your vehicle. While there is no set interval for replacing your fuel filler cap, it is estimated that the gas cap will last up to 50,000 miles before needing a replacement. Anticipating more than 100,000 miles from one fuel tank filler cap is not likely realistic.
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How long does a fuel cap last?
A fuel cap is used all the time, so it will need to be replaced eventually. The cap can last up to 50,000 miles, and sometimes longer if it is properly cared for. A malfunctioning gas cap needs to be replaced as soon as possible, as a cracked cap or missing seal will allow fuel vapours to escape from the tank, causing fuel economy to drop. A missing cap also runs the risk of burning down your car.
You can tell if your fuel cap is malfunctioning if it doesn't tighten properly, or if you can smell fuel from your vehicle. You can also check the bottom of the cap to see if it is vented. All modern gas caps are vented in some form.
The average cost for a gas cap replacement is between $74 and $80. You can use a replacement to repair pinholes, rust-outs, hairline cracks and holes up to 1/2" in diameter.
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Where to buy a replacement fuel cap
A fuel cap can last up to 50,000 miles and sometimes longer if it is properly cared for. However, a malfunctioning gas cap needs to be replaced as soon as possible. A cracked cap or missing seal will allow fuel vapours to escape from the tank, and over time will cause fuel economy to drop, costing you at the pump.
There are several places where you can buy a replacement fuel cap.
AutoZone offers fuel caps of all shapes and sizes at competitive prices. They also offer free in-store pickup or free next-day delivery on eligible orders. You can also upgrade to a locking model if you wish.
Amazon offers a wide range of replacement fuel tank caps, with free shipping on eligible orders.
Ace Hardware also provides replacement fuel caps, particularly for gas-powered lawn mowers and other outdoor power equipment. They offer both winged and threaded designs, so it is important to check your model before purchasing a replacement.
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Frequently asked questions
A fuel cap can last up to 50,000 miles, but it will need to be replaced sooner if it is not properly cared for.
If your fuel cap is cracked or the seal is missing, it will need to be replaced. You may also notice a fuel smell from your vehicle, or the check engine light may come on.
If your fuel cap is damaged or missing, fuel vapours can escape from the tank, causing a drop in fuel economy. In some cases, this could also lead to your vehicle catching fire.
The average cost for a gas cap replacement is between $74 and $80. Labor costs are estimated between $17 and $23, while parts are priced at $57.
Yes, you can use products such as epoxy putty to repair pinholes, rust-outs, hairline cracks and holes up to 1/2" in diameter.
