Sylvie Willis
Ford truck owners have discussed the Lisle LIS37000 Fuel Line & Air Conditioning Disconnect Tool Set as a useful tool for disconnecting fuel lines. However, some users have reported that the tool is ineffective at disconnecting lines due to its thickness and inability to release the quick release. Users have also shared hacks for disconnecting fuel lines, such as wrapping something plastic around the hard line and pushing it in, or using a Siphon Air Blower & Water followed by penetrating oil to break down hardened silt.
Characteristics and Values Table for Using a Ford Fuel Line Fitting Tool
| Characteristics | Values |
|---|---|
| Fuel line | 5/16", 3/8", 1/4" |
| Tool material | Plastic, aluminum, steel |
| Tool type | Scissor-like, Siphon Air Blower, Hydraulic Flare Tool |
| Tool brand | Lisle (LIS37000 model) |
| Tool set price | $9 |
| Tool retailer | Autozone, Walmart |
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What You'll Learn
Using a fuel line disconnect tool
First, ensure you have the correct tool for the job. Fuel line disconnect tools are vehicle-specific, so check that the tool you have is compatible with your car's fuel line. These tools are designed to disconnect the fuel line from the fuel rail, and they come in various sizes, so it is important to get the right one. Metal tools are generally recommended over plastic ones as they are stronger and less likely to break during use.
Before you begin, clean the area to prevent any dirt from getting into the lines or tank. Then, insert the tool into the fuel line connector. This may require some force, but ensure that it is securely in place. Once the tool is in position, you will need to push the line further "on" to disconnect it. This action will free the tabs from the lip, allowing you to separate the fuel line from the fuel rail.
It is important to note that fuel line disconnect tools are designed for quick-connect fuel lines. If your vehicle has a different type of connection, you may need to use a different method or tool to disconnect the fuel line safely. Always consult a professional mechanic or a trusted repair guide for specific instructions for your vehicle.
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Replacing plastic factory fuel line push-on connectors
When replacing plastic factory fuel line push-on connectors, there are several methods that can be used. One common method is to use a fitting tool, such as the Dorman tool or a brake line flaring block, to press the new fitting on. This method typically requires a clamp block or a similar tool. Another approach is to heat the line, either with a heat gun or by boiling water, to soften the plastic and make it more pliable for installation. This method should be carried out with caution to avoid any safety hazards.
It is important to note that heating the line with boiling water may not be sufficient to fully soften the plastic, and a hairdryer or heat gun might be needed to provide additional heat. When using a heat gun, it is crucial to be cautious and avoid melting the fuel line. One technique is to create a tube from aluminium foil to trap the heat around the line. This helps direct the heat to the desired area while also protecting surrounding components.
In some cases, it may be necessary to cut and remove the old plastic fitting before installing the new one. This can be a delicate process, especially when dealing with fuel lines that have PVC-lined inner tubes, as cutting and removal can be challenging without damaging the lines. It is recommended to cut only the minimum length necessary to remove the old fitting, typically about 1 cm.
When installing the new fitting, it is important to work quickly as the inner tube can shrink, making the installation more difficult. The fitting may need to be forced into the hose with some degree of strength. Additionally, it is worth noting that different vehicles may have specific requirements or variations in their fuel line replacement processes, as seen in the example of the Mustang 94-97 fuel pump hanger, where the supply line dimensions differ from the factory plastic line.
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Using a hydraulic flare tool
The Universal Hydraulic Flaring Tool is a powerful and compact tool used to produce 45-degree SAE inverted, ISO bubble, Push-Connect, GM Fuel Line, and single flares quickly and accurately, both on and off the vehicle. It is indispensable for a shop that frequently repairs or replaces lines of any type. The tool comes with many dies and is designed to handle flares for 45-degree inverted, Bubble ISO, Push-connect, GM Fuel, and GM Transmission flaring. Single flares can also be fabricated for lower-pressure lines.
The tool itself comes in four parts: the Yoke, the Yoke Handle, the Hydraulic Handle, and the Clamping Screw Rod. The plunger is threaded so that the yoke can screw onto the handle. Assembling the tool is a straightforward process: slide the clamping screw rod into the clamping screw, screw the yoke onto the hydraulic handle, and then thread the yoke handle into the hole on the bottom of the yoke. From there, the tool is assembled and may be used for flaring. The Universal Hydraulic Flaring Tool is operated by closing the hydraulic system inside the handle and pumping.
Depending on the flare shape desired, the die will be different: a double flare will use the flare labeled with the imperial measurements of the tubing's outer diameter, while other dies will be labeled with other details that connote their corresponding flare (i.e. ISO, CONNECT, and GM FUEL). Once the new die is loaded, the hydraulic handle can be closed and pumped until the lever once again becomes difficult to actuate. From there, the knob can be turned to open. This will retract the plunger. Depending on the flare, there will also be an OP 2 die that must be slotted into the plunger, and the whole process is repeated. This is the case for double flares.
Some potential problems that may arise include the flare forming off-center from the line, the die set slipping, or the line getting stuck in the die. If a flare forms off-center, it is likely that the tubing was not straight or was unevenly work-hardened. If the tubing slips in the die set, it is likely that the clamping screw was not tightened enough or that the surface of the tubing has been worn smooth. The worst problem is when the tubing gets stuck inside the die, which is likely because the tubing itself was not sized to specs and had an abnormally large outer diameter. If this happens, work the line around in the die until it comes free. With longer flares, this may be more difficult but can be done with a pair of pliers, a vice, and a mallet.
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Replacing a fuel pump hanger
The fuel pump hanger is a crucial component in fuel-injected vehicles, as it prevents fuel starvation during acceleration and cornering. When replacing a fuel pump hanger, it is important to consider the specific make and model of your vehicle, as well as the type of fuel pump hanger you intend to install. Here is a step-by-step guide to help you through the process:
Step 1: Assess the Vehicle and Purchase the Correct Hanger
First, determine the make and model of your vehicle. This is important because fuel pump hangers are vehicle-specific. For example, the GPA-Series Fuel Pump Hanger is designed for use with die-stamped alloy-coated and stainless steel gas tanks that have factory-installed reservoir trays.
Step 2: Gather the Necessary Tools and Materials
Before beginning the replacement process, ensure you have all the necessary tools and materials, including the new fuel pump hanger, gaskets, screws, and O-rings. Additionally, you may require a drill, a soldering tool, and Teflon tape, depending on the specific installation method you choose.
Step 3: Remove the Old Fuel Pump Hanger
Carefully remove the old fuel pump hanger, taking note of its orientation and any connections. This step may involve detaching fuel lines and electrical connectors. Be cautious when handling fuel lines to avoid spills or leaks.
Step 4: Prepare the New Fuel Pump Hanger
Prepare the new fuel pump hanger by cleaning and inspecting it for any defects. Ensure that all necessary components, such as gaskets and O-rings, are included with the hanger. If not, you may need to reuse the components from the old hanger or source them separately.
Step 5: Install the New Fuel Pump Hanger
Install the new fuel pump hanger, ensuring that all connections are secure and properly sealed. This may involve threading the fitting into the hanger and sealing it with Teflon tape or soldering. For example, one individual on a forum reported using a 90-degree fitting and soldering it in place to ensure a secure connection.
Step 6: Reattach Fuel Lines and Electrical Connections
Carefully reattach the fuel lines and electrical connectors to the new fuel pump hanger, ensuring that all connections are secure and properly sealed. Take care to avoid any leaks or damage to the components.
Step 7: Test the Installation
Once the new fuel pump hanger is installed, test the vehicle to ensure that the replacement was successful and that the fuel system is functioning properly. Check for any leaks or unusual noises, and ensure that the vehicle starts and runs smoothly.
It is important to note that this is a general guide, and the specific steps may vary depending on your vehicle and the type of fuel pump hanger you are installing. Always refer to the manufacturer's instructions or seek the assistance of a qualified mechanic if you are unsure about any part of the replacement process.
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Using a Siphon Air Blower to disconnect a fuel line
Firstly, locate the fuel line and disconnect it. You may need a special tool for this, or you can make your own fuel disconnect tool. Attach a hose to the end of the fuel line and direct the other end into a canister. Ensure the canister is clean and uncontaminated.
If you are using an automatic pump, the fuel should flow out of the tank and into the canister. If not, you will need to pump a few times to get the gas flowing. Make sure the canister is placed lower than the inlet of the hose in the tank, or the fuel won't flow.
Monitor the flow of gas. As you blow into the tank, you should see the gas move through the hose and into the canister. Once the gas is flowing freely, you can stop blowing, and gravity will do the rest.
When you want to stop the siphoning, cover the hose with your thumb, raise it above the level of gas in the tank, and remove your thumb. Any remaining gas in the hose should flow back into the tank. Remove the hose and close the tank.
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Frequently asked questions
A fuel line disconnect tool is used to remove the fuel filter from a truck.
Some examples of fuel line disconnect tools include the scissor-like tool made of aluminum, the Lisle LIS37000 Fuel Line & Air Conditioning Disconnect Tool Set, and the "spreader" pliers.
It is important to push the line into the fitting to remove the tension against the fingers before pushing the tool in. Additionally, soaking the fuel line in penetrating oil can help to break down hardened silt.
As an alternative to using a fuel line disconnect tool, some people have reported success by wrapping something plastic around the hard line and shoving it in, or by using "spreader" pliers to push the tool into the fitting.
