
Replacing a metal fuel line with a rubber one is a common question, especially for older cars. While it is possible to use rubber fuel lines, there are some important considerations to keep in mind. The type of rubber line, the fittings required, and the potential challenges of connecting the rubber line to the metal line are all factors that need to be taken into account.
| Characteristics | Values |
|---|---|
| Using a rubber line to replace a fuel line | Possible, but not recommended |
| Fittings needed | Regular hose clamps |
| Type of rubber line | "Good" rubber line, aka "fuel injection line" |
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What You'll Learn

What fittings will I need?
You will need to use high-pressure fuel line, which will hold up on its own. However, you will need to find a way to attach the rubber line to the two ends of the metal line. You could use regular hose clamps, but these are not recommended. One suggestion is to get a shop to weld on some ribs and then use two clamps. Another option is to use fuel injection clamps.
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How do I attach the rubber line to the metal line?
Yes, you can use a rubber line to replace a fuel line, but you will need to use a high-pressure fuel line. The problem is getting it to hold on to the two ends of the metal line. If you cut out a section, you will have two bare ends of metal line, and no ribs to hold the rubber line on with. You can use regular hose clamps, but these are not recommended. One option is to have a shop weld on some ribs and use two clamps. You can also use fuel injection clamps.
To attach the rubber line to the metal line, you will need to cut the metal line to the correct length. You will then need to slide the rubber line over the metal line. Make sure that the rubber line is the correct size and that it fits snugly over the metal line. You may need to use some kind of adhesive or sealant to ensure that the connection is secure and does not leak.
It is important to note that you should only use a rubber line that is specifically designed for fuel injection. Do not use a generic rubber line, as this could be dangerous. Make sure that you have all the necessary fittings and clamps before you begin the installation.
When attaching the rubber line to the metal line, it is important to take your time and ensure that the connection is secure. Leaks can be dangerous and can cause damage to your vehicle. If you are unsure about the process, it is always best to consult a professional.
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What type of rubber line should I use?
It is possible to replace a metal fuel line with a rubber one, but you should use a high-pressure fuel line. You will also need to use hose clamps to attach the rubber line to the metal line, but some people are uncomfortable with this solution. You should also make sure to get a "good" rubber line, or "fuel injection line", rather than a cheaper option.
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How much rubber line will I need?
The amount of rubber line you will need depends on the make and model of your car. For example, if you have an 85 GT, you will need around 3 feet of rubber to replace the hard line.
It is important to use a high-quality rubber line, such as a "fuel injection line", rather than a cheaper alternative, which may not be as durable.
You will also need to consider the fittings required to attach the rubber line to the metal line. This may involve using clamps or welding on some ribs to ensure a secure connection.
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What are the safety implications?
There are several safety implications to consider when replacing a fuel line with a rubber line. Firstly, it is important to use a high-quality rubber line, specifically designed for fuel injection, rather than a cheaper alternative. This is because a low-quality rubber line can become a source of gasoline-fed fire under the hood of your car.
Another safety concern is ensuring that the rubber line is securely attached to the metal fuel line. If you cut out a section of the metal line, you will be left with two bare ends with no ribs to hold the rubber line in place. Regular hose clamps can be used, but these may not be reliable and could lead to leaks or detachment.
It is also important to consider the pressure of the fuel line. A high-pressure fuel line will hold up better than a low-pressure one. Additionally, the length of the rubber line should be sufficient to replace the hard line, with some users recommending around 3 feet of rubber line for an older car.
Finally, accessing the other side of the fuel line can be challenging, and it may be necessary to seek professional help or advice to ensure a safe and secure replacement.
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Frequently asked questions
Yes, but you should use a high-pressure fuel line, and you will need to use hose clamps to attach it to the metal line.
You should use a "good" rubber line, also known as a "fuel injection line", rather than a cheaper option.
This will depend on your vehicle, but one user suggested that they would only need around 3 feet of rubber to replace the hard line in their 1985 car.
You will need to use hose clamps to attach the rubber line to the metal line. You may also need to have some ribs welded on to hold the rubber line in place.
Yes, but be aware that you may encounter issues with attaching the rubber line to the metal line, and you may not feel confident in the security of the connection.











































