Rajan Wilcox
Removing fuel injectors from a Subaru FA20 engine can be a challenging task, with some injectors being almost impossible to remove without causing damage. There are various methods and tools that can be used to remove the injectors, such as using a large flat screwdriver to gently pry the injector up, or using a slide hammer attachment. It is important to strictly follow instructions to avoid damage to the injectors. Once removed, the injectors can be cleaned or replaced, which can improve engine performance and fuel efficiency.
How to get fuel injectors out of a Subaru FA20
| Characteristics | Values |
|---|---|
| Difficulty | Very difficult to remove without damaging the injectors |
| Tools | OEM tool, slide hammer attachment, pliers, large flat screwdriver with a 3/8” to 1/2” blade, wooden screw |
| Cost | $500 for the OEM tool |
| Alternative | Soak injectors in penetrating oil, then twist and tap with a small rubber mallet |
| Cleaning Service | Available for $845 |
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What You'll Learn
Use a speciality tool to remove without damaging
To remove the fuel injectors from a Subaru FA20 engine without causing damage, you will need to use a speciality tool. The OEM tool is a slide hammer attachment, which can be expensive and hard to get hold of. However, it is possible to order it directly from Subaru using the Subaru part number.
Before using the speciality tool, there are some important steps to follow to ensure the injectors are not damaged during removal. Firstly, disconnect the fuel pump connector and crank the engine for five seconds before turning the ignition off. Then, remove the air cleaner upper case, airflow meter, and air inlet boot as an assembly.
Once you have the speciality tool, you can try soaking the injectors in penetrating oil to help loosen them. You can then use a small rubber mallet to gently tap on the plastic connector end to further loosen the injectors.
If the injectors are still stuck, you can try screwing a large wood screw into the opening of the injector and attaching the slide hammer to that. This should provide enough force to remove the injectors without causing damage. It is important to be careful during this process, as the fuel injector cap mounting threads can be easily damaged.
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Soak in penetrating oil, then twist
To remove the fuel injectors from a Subaru FA20 engine, one method is to soak them in penetrating oil and then twist them. This method is suggested by Mike Alberghini, a certified Subaru technician. It is a workaround for those who don't have the OEM tool, which is a slide hammer attachment that can be expensive and hard to get.
The first step is to soak the injectors in penetrating oil. This will help to loosen them up and make them easier to remove. Once they have been soaked, you can then try to gently twist them. It may also help to tap on the plastic connector end with a small rubber mallet. This process should help to get the injectors wiggling and moving so that they can be removed.
If the injectors are still difficult to remove, another option is to use a vice grip. By gripping the injectors with a vice grip and twisting them back and forth, you can create some movement and then pull them out. However, this method may damage the injectors, so it is not recommended if you want to keep them intact.
Another workaround for stuck injectors is to screw a large wood screw into the opening of the injector and then use a slide hammer to pull it out. This method will also likely damage the injectors, so it is suggested as a last resort.
It is important to note that the FA20 injectors are known to be particularly difficult to remove without causing damage. Therefore, it is recommended to follow the official instructions and use the correct tools to avoid any issues.
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Use a wood screw and a slide hammer
If you are attempting to remove the fuel injectors from a Subaru FA20 engine and they are stuck, one method you can try is to use a wood screw and a slide hammer. This method may be useful if you do not have access to the OEM tool, which is a slide hammer attachment that can be expensive and hard to get.
First, disconnect the fuel pump connector and start the engine, allowing it to stall. Crank the engine for five seconds and then turn the ignition switch off. Remove the air cleaner upper case, airflow meter, and air inlet boot as an assembly. Then, remove the fuel injector cap(s) and the rubber spacer(s) fitted between the cap(s) and the injector(s). Be careful not to misplace the rubber spacers, as they must be reinstalled with the new injector(s).
Next, use your fingers to turn the fuel injectors 90 degrees. The fuel injector connectors on both sides of the engine should be pointed toward the front of the vehicle. At this point, you can try to gently twist the injectors to see if they will come out. If they are still stuck, you can try using a small rubber mallet to tap on the plastic connector end and help loosen them.
If the injectors are still not coming out, you can use the wood screw and slide hammer method. Screw a large wood screw into the opening of the injector and hook the slide hammer up to it. This will provide the force needed to pull the injector out. Be cautious when using this method, as it can potentially damage the injectors or surrounding components if not done carefully.
Once the injectors are removed, place them in a box or wrap them to protect them during shipping or storage. It is important to handle fuel injectors with care to avoid damage, as damaged injectors may not be accepted for return or warranty claims.
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Disconnect the fuel pump connector
Disconnecting the fuel pump connector is the first step in removing the fuel injectors from a Subaru FA20 engine. This process should be approached with caution, as the injectors in the FA20 are notoriously difficult to remove without causing damage.
To begin, start the engine and let it stall. Crank the engine for five seconds, then turn the ignition switch off. This step is important for safety and to ensure the fuel pump connector can be safely accessed.
Now, locate the fuel pump connector. It is essential to use the correct tools and techniques to avoid damaging the fuel injector. The Subaru service manual strongly advises against using pliers on the fuel injector itself, as this can cause damage. Instead, if you must use pliers, only use them on the connector to gently squeeze it enough to loosen the tab.
Another method is to use a large flat screwdriver with a 3/8" to 1/2" blade. Gently pry upwards on the underside of the fuel injector connector area, leveraging the screwdriver while simultaneously squeezing the connector with your thumb and pulling upwards. This two-handed approach requires some dexterity but can effectively loosen the connector without damaging the injector.
If the fuel injectors are extremely stuck, a more aggressive approach can be taken, although this may involve damaging the injectors. One method is to screw a large wooden screw into the opening of the injector and then attach a slide hammer to remove it forcefully. Alternatively, some mechanics suggest soaking the injectors in penetrating oil and then using a small rubber mallet to tap on the plastic connector end to loosen it.
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Remove the air cleaner upper case, air flow meter, and air inlet boot
To remove the air cleaner upper case, air flow meter, and air inlet boot, you must first disconnect the fuel pump connector. Then, start the engine and allow it to stall. Crank the engine for five seconds and turn the ignition switch off.
The next step is to remove the air cleaner upper case, air flow meter, and air inlet boot as an assembly. On SVX vehicles, you must also remove the power steering hose tie-wrap on the right side of the engine.
It is imperative that you follow the instructions provided by the manufacturer to avoid damaging the fuel injectors.
After removing the above-mentioned parts, you can proceed to remove the fuel injector cap(s). Be careful not to misplace the rubber spacer(s) fitted between the cap(s) and the injector(s). These rubber spacers must be reinstalled when placing new injectors.
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Frequently asked questions
The injectors in the FA20 are almost impossible to remove without damaging them. However, there are some special tools that can be used. One method is to soak the injectors in penetrating oil and then gently twist them. If they are stuck, screw a large wooden screw into the opening of the injector and hook a slide hammer up to it.
The OEM tool is a slide hammer attachment, but it is expensive and hard to get hold of. There are some other special tools that can be used, which, although a bit hard on the hands, will get the job done.
Firstly, disconnect the fuel pump connector and allow the engine to stall. Crank the engine for five seconds and then turn off the ignition switch. Next, remove the air cleaner upper case, airflow meter, and air inlet boot. Then, remove the fuel injector cap and turn the fuel injector 90 degrees. Finally, gently pry the injector up using a large flat screwdriver.
