
Fuel lines are typically warranted for 3-5 years, but there are a number of factors that can affect their longevity. These include exposure to sunlight, which can reduce their service life to less than 10 years. Other symptoms of a bad fuel line include the bike operating abnormally, such as running out of gas or bogging out. A leaky fuel line is also a sign that it needs to be replaced, although this is usually an easy fix.
| Characteristics | Values |
|---|---|
| Typical warranty length | 3-5 years |
| Service life | 10 years |
| Reasons to replace | Cracking, splitting, residue on the inside |
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What You'll Learn

Fuel lines are typically warranted for 3-5 years
Fuel lines can be damaged by bad wrecks, but more often it's a combination of old age, improper storage, and bad maintenance that causes issues. You can tell that a fuel line is bad if the bike is operating abnormally, for example, if it's running out of gas or "bogging out".
You should also be aware of cracks and splits in the fuel line, which indicate deterioration. If you see any cracks or splits, it's best to replace all the fuel lines at once, before they cause any trouble.
Another issue to look out for is permeation, which can be a problem with older fuel lines. The new regulation is the A1-15 lines, which don't permeate as badly and are more resistant to ethanol.
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If exposed to sunlight, they may need replacing sooner
Fuel lines are typically warranted for 3-5 years, but their service life is around 10 years. If exposed to sunlight, they may need replacing sooner. Fuel lines that are showing deterioration on the outside are also deteriorated on the inside. The biggest concern is permeation, which can cause residue to build up on the inside of the lines. Ethanol can also cause permeation, so it's important to use the correct type of fuel line for your motorcycle. If you live somewhere hot and dry, your fuel lines may also deteriorate faster. A leaky fuel line is an easy fix, but with regular maintenance, it's unlikely to be something you'll ever have to worry about.
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Fuel lines showing deterioration on the outside are also deteriorated on the inside
A leaky fuel line is an easy fix, but with regular maintenance, it's unlikely to be an issue. Other symptoms of a bad fuel line include the bike operating abnormally, such as running out of gas or "bogging out". A bad wreck can also damage the fuel line, but most of the time, it's due to old age, improper storage or bad maintenance.
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A leaky fuel line is an easy fix but can delay your riding day
A leaky fuel line won't end your riding day, but it will delay it. It's a pretty easy fix, but with some care and regular maintenance, it's likely one of the last things you'll ever worry about. Other symptoms of a bad fuel line include the bike operating abnormally, like it's running out of gas or "bogging out". A bad wreck can damage the fuel line, but most of the time it's one or a combination of old age, improper storage and bad maintenance. Fuel lines are typically warranted for 3-5 years, but if they're exposed to sunlight, you should replace them sooner. If you live somewhere hot and dry, like Arizona, you should be extra vigilant.
Fuel lines that are showing deterioration on the outside are deteriorated on the inside too. If you notice any cracking or splitting, replace them all at once before they give you any trouble. It's also worth noting that dirt bikes don't usually use fuel filters anymore, but if yours does, it should be replaced every few rides.
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A bad wreck can damage the fuel line
Fuel lines are typically warranted for 3-5 years, but their service life is around 10 years, less if exposed to sunlight. However, there is no set time frame for replacing a motorcycle fuel line. Instead, it is recommended to replace the fuel line when it shows signs of deterioration, such as cracking or splitting. A leaky fuel line is another sign that the fuel line needs to be replaced. Other symptoms of a bad fuel line include the bike operating abnormally, such as running out of gas or "bogging out".
Therefore, it is important to regularly inspect and maintain your motorcycle's fuel line to ensure it is in good condition and to prevent any potential issues.
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Frequently asked questions
Fuel lines are typically warranted for 3-5 years, but you should be able to get up to 10 years out of them if they're not exposed to sunlight.
You should replace your fuel line if you notice any cracks or splitting. You might also notice your bike operating abnormally, such as running out of gas or "bogging out".
A leaky fuel line won't end your riding day, but it will delay it. It's a pretty easy fix, but with some care and regular maintenance, it's likely one of the last things you'll ever worry about.
Fuel lines can deteriorate due to old age, improper storage, bad maintenance, or exposure to sunlight.
You can find step-by-step guides online, such as this one for dirt bikes: https://www.motosport.com/blog/how-to-replace-the-fuel-line-in-a-dirt-bike.











































