Regan Brown
The fuel injectors on a 2001 Ford Focus are located between the firewall and the Stock AirBox. To remove the fuel injectors, you will need to cut power to the fuel system by pulling out the white box that corresponds to the gas pump. Once the fuel system is depressurized, you can remove the two bolts that hold the fuel rail to the intake manifold and pull out the injectors.
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What You'll Learn
Removing the fuel rail and injectors
To remove the fuel rail and injectors from a 2001 Ford Focus, you must first relieve the fuel system pressure. This can be done by unplugging the fuel pump control under the back seat or the fuel shut-off switch in the passenger-side kick panel. You can then pull a fuse or relay for the pump and run the car until it stops. Attempt to start the car a few more times to ensure the fuel pressure is reduced.
Next, disconnect the vehicle's battery and vacuum hoses, as well as any electronics connected to the air intake tube. Disconnect the air intake tube from the throttle body and air filter box. Remove any vacuum lines or devices restricting access to the fuel rails.
Now, unplug the electronics from each fuel injector. The fuel injectors will be connected to the fuel rail. Remove the two bolts securing the fuel rail to the engine or intake manifold. Lift the fuel rail from the fuel injectors. You may need to rock the fuel rail side to side to disengage it from each injector head.
At this point, the fuel rail should be loose in the engine bay. To completely remove it, you will need to disconnect the fuel line. This can be done by unclipping the fuel line and pushing it out, then using a screwdriver to finish pulling it out.
Finally, pull the injectors out. This may take some effort, but they will pop out. Be sure to wipe away any spilled fuel or allow it to evaporate before continuing.
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Disconnecting the fuel line
Firstly, it is important to depressurize the fuel system. This can be done by pulling out the white box that corresponds to the gas pump from the fuse box located between the firewall and the Stock AirBox. With the car level, start the engine, and it should run for about a minute before stalling.
Now, to disconnect the fuel line, there are a few methods that can be used. One method is to use a fuel line disconnect tool, which can be purchased from automotive stores or online. This tool is designed to slide up between the fuel line and the high-pressure fuel pump, releasing the line. However, it may be challenging to find the correct tool, as some Ford connectors are counterintuitive. For example, the coil connector on a Zetec engine requires pushing the horizontal spring inwards to remove it.
Another method is to use pliers, such as hose grip pliers or ring nose pliers, to squeeze the connection and pull back on the fuel line. This may require significant force, and there is a risk of damaging the connector or the fuel line if not done carefully.
Additionally, it is possible to depressurize the fuel system by loosening the screws on the fuel line and carefully allowing the fuel to bleed out. Alternatively, the fuel pump control module can be unplugged from under the back seat, or the fuel shut-off valve can be accessed in the passenger-side kick panel. Running the car until it stops and then attempting to start it a few more times will help ensure that the fuel line is depressurized.
It is important to note that working with fuel lines can be dangerous, and it is always recommended to consult a professional or a mechanic if you are unsure about any part of the process.
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Removing the throttle body
To remove the throttle body from a 2001 Ford Focus, you will need to remove nine screws in total. Four of these are the main screws holding the throttle body down to the intake manifold. Two are holding the TPS into the throttle body (these can remain if you are just porting and not installing an aftermarket one). Once you lift the throttle body, the throttle cable, and if applicable, the cruise control cable, need to come off.
To remove the throttle cable, push it upwards, and you will hear it click out of place. There is a clip on the outer end of the cable that attaches to the throttle plate linkage, which holds the cable in place.
Before beginning work, depressurize the fuel system. Right between the firewall and the Stock AirBox, there is a set of fuses in a covered box. The inside of the box has a diagram. Pull out the white box that corresponds to the gas pump. This will cut power to the fuel system. Make sure the car is level and start it up. It should run for a minute and then stall.
It is also important to note that there was a difference between the throttle bodies of the 2000-2002 and 2003-2004 Ford Focus models.
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Disconnecting the electrical connectors
Now, you can proceed to remove the fuel injectors. There are two bolts that hold the fuel rail to the Intake Manifold. Remove these bolts, and then pull out the fuel injectors with some effort. This will leave the fuel rail loose in the engine bay. If you need to completely detach the fuel rail, you must disconnect the fuel line by unclipping and removing it. This process may take some time and require careful manipulation, as the clip can be challenging to access.
It is worth noting that accessing the electrical connectors of the fuel injectors can be difficult with the fuel rail in place. Therefore, it may be easier to first remove the fuel rail and then disconnect the electrical connectors from the injectors.
Some sources suggest that there are alternative methods to depressurize the fuel system. One method involves loosening the screws on the fuel line to release the pressure and carefully allowing the fuel to bleed out. Another approach involves unplugging the fuel pump control module located under the back seat or the fuel shut-off valve in the passenger side kick panel. Running the car until it stops and attempting to restart it a few times can also depressurize the system.
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Depressurising the fuel system
Firstly, locate the fuse box. It is situated between the firewall and the Stock AirBox. Inside the fuse box, there is a diagram. Pull out the white fuse box that corresponds to the gas pump. This will cut the power to the fuel system.
Next, ensure that the car is level and start the engine. The car should run for about a minute and then stall. At this point, your fuel system is depressurised.
You can now proceed to remove the fuel injectors. There are two bolts that hold the fuel rail to the Intake Manifold. Remove these bolts, and then pull out the injectors. It might take some effort, but they will come out.
If you need to completely remove the fuel rail, you will also need to disconnect the fuel line. There is a funky clip that you will need to remove. This might take some time and effort, as it is not a standard clip.
It is important to note that you should not need any special tools for this process. However, if you are not comfortable performing these steps, it is always best to consult a qualified mechanic.
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Frequently asked questions
The fuel injectors are located between the firewall and the Stock AirBox.
First, cut the power to the fuel system by pulling out the white box that corresponds to the gas pump from the fuse box. Then, make sure the car is level and start it up. It should run for a minute and then stall. Next, remove the two bolts that hold the fuel rail to the Intake Manifold. After that, pull the injectors out.
No, you don't need any special tools.
