
Ford's Easy Fuel capless gas tank system was introduced in 2008 to prevent fuel theft, avoid splashback, and stop fuel vapors from escaping into the atmosphere. While the system is convenient, it can make basic car maintenance more challenging. For example, some Ford owners have reported difficulties when trying to add fuel additives, such as fuel injector cleaner or stabilizers, to their capless gas tanks. This paragraph will discuss the steps and tools required to add fuel cleaner to a Ford capless gas tank.
| Characteristics | Values |
|---|---|
| Fuel filler cap | Not required |
| Fuel nozzle | Simply insert |
| Fuel filler | Closes and latches when the nozzle is removed |
| Splashback | Avoided |
| Fuel theft | Deterred |
| Fuel vapors | Prevented from escaping |
| Portable fuel container | Use a white plastic funnel |
| Funnel location | Cargo bin behind the last row of seats |
| Funnel attachment | Cover on tire-changing tools |
| Capless fuel filler issues | Difficult to add fuel stabilizer or injector cleaner |
| Fuel injector cleaner | May not fit through the fuel door |
| Filler neck | Has two doors |
| Funnel | Opens both filler neck doors |
| Funnel usage | Explained in the owner's manual |
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What You'll Learn

Use a funnel to add fuel cleaner
To add fuel cleaner to a Ford capless gas tank, you can use a funnel. The funnel will allow you to add fuel from a portable fuel container.
Your car should have come with a funnel that is specifically designed to open both filler neck doors, allowing you to add fuel and pour additives into the tank. You can find this funnel in the cargo bin behind the last row of seats, attached to the cover on your tire-changing tools. It is usually stored in a bag to prevent any mess.
If your car did not come with a funnel, you can purchase one separately. It should be noted that any funnel you use needs to be small enough to fit into the filler neck and open both doors. A long, narrow metal or plastic tube of the same diameter as the nozzle will also work to disengage the locks/tabs on the spring-loaded door.
Once you have the funnel, simply follow the instructions provided in your owner's manual to add the fuel cleaner. This process will allow you to bypass the second door in the filler neck and ensure that the cleaner is added directly to the tank.
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Use a long, narrow metal or plastic tube
If you're looking to add a fuel injector cleaner to your Ford's capless gas tank, you might need to get creative. The capless design is great for deterring fuel theft and preventing splashback and fuel vapours from escaping, but it can make basic maintenance a bit tricky.
One method you can try is using a long, narrow metal or plastic tube. This tube should be the same diameter as the nozzle of your fuel injector cleaner. By inserting the tube into the spring-loaded fuel filler, you can disengage the locks or tabs that keep the door closed. This will allow you to pour in the fuel additive without any issues.
It's important to note that you should not force anything into the fuel filler. Make sure the tube you choose has a smooth surface and is free of any sharp edges that could potentially damage the seals or mechanisms inside the filler. You can also use a small funnel attached to the tube to make the process neater and more efficient.
The owner's manual of your Ford vehicle should provide detailed instructions on how to access and use the funnel for adding fuel additives. Usually, this funnel is located in the cargo bin behind the last row of seats, attached to the cover on your tire-changing tools. It's designed to work with the capless fuel filler and will ensure a safe and proper way to add your fuel injector cleaner.
By following these steps and using the tools provided by the manufacturer, you can effectively add a fuel injector cleaner to your Ford's capless gas tank, maintaining the health and performance of your engine.
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$10.99

Overcoming the two doors in the filler neck
The Ford capless gas tank has two doors/flaps in the filler neck. The first door is designed to keep dust out, while the second flap, located deeper in the neck, requires a larger circumference to push through. The capless design is intended to prevent splashback, fuel theft, and the escape of fuel vapors.
To overcome the two doors in the filler neck and add a fuel cleaner, you will need to use a long, narrow metal or plastic tube with the same diameter as the nozzle to disengage the locks/tabs on the spring-loaded door. Once the locks are disengaged, you can then use a small funnel to add the fuel cleaner.
It is important to note that only the funnel provided with your vehicle will work with the capless design. Other funnels or tubes with different diameters may not disengage the locks/tabs and allow access to the filler neck.
Additionally, the white plastic funnel located in the cargo bin behind the last row of seats can be used when adding fuel from a portable fuel container. This funnel is attached to the cover on your tire-changing tools and is essential for adding fuel or additives in an emergency.
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Issues with capless fuel tanks
Capless fuel tanks, also known as capless gas tanks, have been around since at least 2009 when Ford introduced them on the Explorer. While they offer certain advantages, such as enhanced security against fuel theft and reduced splashback, there are also some issues with capless fuel tanks that users have encountered.
One common issue with capless fuel tanks is the challenge of refuelling from a portable fuel container. Unlike traditional fuel tanks, capless systems require a specific funnel provided by the automaker. This funnel is often placed in the glove box or cargo bin, but it can also be found in other locations within the vehicle. If users are unaware of the need for this funnel or are unable to locate it, they may struggle to refuel their vehicles when using portable fuel containers.
Another challenge with capless fuel tanks arises when attempting to fill the tank beyond the point where the gas station pump clicks off. In such cases, users have reported experiencing strong fuel fumes escaping from the filler neck area, leading to unpleasant odours and potentially causing headaches. Therefore, it is recommended to avoid overfilling the tank and driving immediately into an enclosed space, such as a garage.
Capless fuel tanks have also been criticised for their potential to allow dust and debris into the gas tank. In the absence of a traditional cap, there is a risk of dirt entering the compartment when driving on dirt roads or in off-road conditions. While closing the fuel door can help mitigate this issue, some users have expressed concerns about the potential for contamination.
Additionally, some users have reported difficulties in completely filling their capless fuel tanks. In certain vehicles, the pump may click off prematurely, resulting in the tank not being filled to its full capacity. This issue has been attributed to the angles of the filler neck and the sensitivity of the nozzles. Workarounds have been suggested, such as rotating the nozzle or using specific fill notches, but they may not always be effective.
In conclusion, while capless fuel tanks offer certain benefits, users should be aware of potential issues. These include the need for a specific funnel when using portable fuel containers, the risk of strong fumes when overfilling, the potential for dust and debris ingress, and challenges in achieving a complete fill. It is important for vehicle owners to familiarise themselves with their capless fuel system and take the necessary precautions to avoid these problems.
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The benefits of capless fuel filler systems
The capless fuel filler system was first introduced by Ford in the 2009 Explorer. Now, many automakers, including GM, Fiat Chrysler, and Honda, have adopted this technology. This system offers several benefits and conveniences for vehicle owners.
One of the most notable advantages of capless fuel fillers is the added security they provide. Capless systems use mechanisms in the fuel filler neck that prevent fuel theft and siphoning. The design makes it nearly impossible to insert a hose and drain fuel from the tank, giving you peace of mind when it comes to fuel security.
Another benefit of capless fuel fillers is their ease of use. With this system, there is no need to twist off a gas cap or struggle with a traditional fuel filler cap. The capless design allows you to simply insert the fuel nozzle, making the fuelling process more convenient and accessible, especially for individuals with arthritis or other impairments that make twisting a cap difficult or painful.
Capless fuel fillers also help to maintain the integrity of your fuel tank. They are designed with airtight seals that prevent fuel vapors from escaping into the atmosphere and reduce splashback during fuelling. This not only minimizes fuel smell on your hands but also helps to maintain the quality of the air you breathe while reducing potential environmental impacts.
Additionally, capless fuel fillers can help prevent overfilling. Overfilling a fuel tank can lead to performance issues, fuel spills, and potential fuel fires. Capless systems typically have mechanisms in place to prevent overfilling, enhancing the safety of your vehicle and reducing the risk of fuel-related incidents.
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Frequently asked questions
The capless gas tank of a Ford car can be opened by inserting the fuel nozzle. Once fueling is completed, removing the nozzle will cause the spring-loaded fuel filler to close and latch.
The capless fuel filler system helps avoid splashback, prevent fuel theft, and prevents fuel vapors from escaping into the atmosphere.
Your car should have come with a funnel that opens both filler neck doors, allowing you to add fuel or pour additives into the tank. You can find this funnel in the cargo bin behind the last row of seats, attached to the cover on your tire-changing tools. The owner's manual will also explain how to use this funnel.
Any long, narrow metal or plastic tube with the same diameter as the nozzle can be used to disengage the locks/tabs on the spring-loaded door. After that, you can use a small funnel to pour in the additives.
Yes, you can use an octane booster and fuel injector cleaner in your Ford capless gas tank. However, you may need to use the funnel provided with your car or a small funnel to get past the second door in the filler neck.










































