Rajan Wilcox
Removing the fuel injectors from a Harley FXDC can be a tricky process. While some people opt to remove the entire fuel tank, others suggest that it is not necessary and disconnecting the feed line, lifting the rear of the tank, and supporting it with a piece of wood underneath is sufficient. It is important to remember to spray silicone spray on both ends of the feed line quick connect before reconnecting it. Additionally, accessing the fuel injectors may require removing the induction module or the top engine mount bracket.
Removing fuel injectors on a Harley FXDC
| Characteristics | Values |
|---|---|
| Fuel tank removal | Not necessary, but can be lifted at the rear and supported with a piece of wood |
| Throttle body removal | Not necessary |
| Fuel feed line | Disconnect |
| Fuel tank | Lift at the rear and support with a piece of wood |
| Fuel injectors | Disconnect and remove the center mounting screw before pulling out as a unit |
| Fuel rail | Remove bolts and clips |
| Fuel rail caps | Remove |
| Induction module | Remove |
| Allen screws | Use a wobble-head Allen wrench to remove the four screws holding the manifold |
| Engine mount bracket | Remove to access injectors |
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What You'll Learn
Disconnect the feed line on the left side
Disconnecting the feed line on the left side of your Harley FXDC is a crucial step in accessing and removing the fuel injectors. Here's a detailed guide on how to approach this task:
First, locate the feed line on the left side of your Harley FXDC. This feed line, often referred to as the "bong," is responsible for supplying fuel to the injectors. It is usually found on the left side of the fuel tank. Before you begin, it is recommended to have a piece of wood nearby that can be used to support the fuel tank later in the process.
To start the disconnection process, spray silicone spray on both ends of the feed line's quick connect. This step is crucial to prevent any issues when reconnecting the feed line later. Once the silicone spray is applied, you can proceed to disconnect the feed line. Gently lift the rear of the fuel tank and place the piece of wood underneath to securely hold it in the raised position. This provides easier access to the feed line and the injectors.
With the fuel tank slightly raised, you can now focus on the feed line. Carefully disconnect the feed line from the left side, ensuring that you don't damage any surrounding components or connections. It's important to be cautious during this step to avoid any fuel leaks or damage to the fuel system. Take your time and work methodically.
Once the feed line is successfully disconnected, set it aside safely. You may now proceed to the next steps of removing the fuel injectors, which typically involve accessing and disconnecting the injectors themselves. Remember to refer to a service manual or seek guidance from a Harley-Davidson technician if you're unsure about any part of the process.
By following these steps, you'll be able to safely and effectively disconnect the feed line on the left side of your Harley FXDC, paving the way for further maintenance or repairs related to the fuel injectors.
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Lift the rear of the tank and place a support underneath
When removing the fuel injectors on a Harley FXDC, one of the first steps you'll need to take is to lift the rear of the tank and place a support underneath. This is an important step as it provides access to the fuel injectors and ensures that the tank is securely held up during the removal process. Here's a detailed guide on how to do this:
First, locate the rear of the fuel tank. This is the end of the tank that is closest to the back of the motorcycle. You may need to refer to your Harley FXDC's service manual for the exact location. Once you have located the rear of the tank, you will need to carefully lift it. Make sure you have a secure grip and lift it slowly and steadily to avoid any accidental damage.
Next, you will need to place a support underneath the tank to hold it in its lifted position. This is important for stability and to ensure that you can safely access the fuel injectors. A piece of wood is often used for this purpose, as it is strong, stable, and can be easily positioned. However, other materials such as metal or plastic can also be used as long as they are sturdy enough to bear the weight of the tank.
When placing the support, ensure that it is positioned directly underneath the tank to bear the weight effectively. You may need to adjust the height or position of the support to ensure a secure fit. It is important to take your time with this step to create a safe and stable working environment.
Once the support is in place, you can continue with the next steps of removing the fuel injectors. Remember to refer to your service manual or seek advice from a Harley-Davidson technician if you are unsure about any part of the process.
By following these instructions, you will be able to safely and effectively lift the rear of the tank on your Harley FXDC and securely support it, providing the access needed to remove the fuel injectors.
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Remove the throttle body
To remove the throttle body from a Harley FXDC, you will need to access the two screws that hold the throttle body to the induction module. This can be challenging without removing the entire intake manifold (as suggested in the service manual), but it is possible.
Firstly, remove the horn to gain better access to the throttle body. You can also unplug the engine temperature sensor plug to create a bit more space to work with.
Next, you will need a long and skinny tool to reach the screws. A long-shafted Torx screwdriver (T20) from Sears has been recommended for this purpose, although a 1/4" nut driver with the proper Torx bit can also work.
With your tool of choice, remove the two screws holding the throttle body in place. You may need to cut a small 1/4 Allen bit to fit into the bolt head if a regular screwdriver doesn't fit.
Once the screws are removed, you should be able to lift and remove the throttle body from the motorcycle. Be careful not to damage any surrounding components or cables during this process.
It is important to note that some Harley models may have different throttle body designs, so specific steps may vary. Always refer to your motorcycle's service manual for the most accurate and model-specific instructions.
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Disconnect the injectors
Disconnecting the injectors on your Harley FXDC requires careful attention to detail. Here's a step-by-step guide to help you through the process:
Firstly, locate the fuel injectors. They are usually situated near the engine, connected to the fuel rail, which sits on top of the injectors. Before beginning any work, ensure the engine is off for safety.
Secondly, to gain access to the injectors, you may need to remove certain parts. This can include the fuel tank, intake manifold, and any connectors or bolts holding the fuel rail in place. It is important to refer to a service manual for your specific model, as different Harley models may have varying removal processes. Some models may require the removal of the entire induction module, while others might only need the fuel rail bolts taken out.
Once you have clear access to the injectors, the next step is to disconnect them. This involves removing the clips or caps that connect the fuel rail to the injectors. Use a suitable tool, such as a wobble-head Allen wrench, to carefully detach these connectors.
With the clips or caps removed, you can now separate the fuel rail from the injectors. Gently lift or slide the fuel rail out of the way, being cautious not to damage any nearby components.
At this point, the injectors should be easily accessible, and you can proceed with your maintenance or replacement tasks. Remember to work carefully and refer to a service manual or seek expert advice if you're unsure about any steps.
Please note that this is a general guide, and specific steps may vary depending on your Harley FXDC model and year. Always refer to official Harley Davidson resources or consult a qualified mechanic if you have any doubts about the procedure.
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Remove the centre mounting screw
To remove the centre mounting screw, you will need to first disconnect the feed line on the left side. You can then lift the rear of the tank and place a piece of wood underneath to hold it up and give you access to the screw. Before reconnecting the feed line, it is important to spray silicone spray on both ends of the quick connect.
Once you have accessed the centre mounting screw, you will need to use an Allen wrench to remove it. The size of the Allen wrench will depend on the size of the screw, so be sure to refer to your service manual for the correct size. With the correct Allen wrench, you can then loosen and remove the screw.
If you are having trouble accessing the screw, you may need to remove the top engine mount bracket or the entire induction module to give you more room to work. This will involve removing the four Allen screws holding the intake manifold flanges, so again, refer to your service manual for the correct size wrench to use.
Once the centre mounting screw is removed, you can then pull out the injectors as a unit and disassemble them on a workbench for further cleaning or replacement.
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Frequently asked questions
To remove the fuel injectors on a Harley FXDC, you will need to disconnect the feed line on the left side, lift the rear of the tank and secure it with a piece of wood, spray silicone spray on both ends of the feed line, disconnect the injectors, remove the center mounting screw, and then pull the injectors out.
No, you do not need to remove the fuel tank. However, you will need to disconnect the feed line on the left side and lift the rear of the tank to access the injectors.
To remove the fuel rail, you will need to remove the clips from the top of the injectors that connect to the fuel rail. It is also recommended to refer to the service manual for detailed instructions.
