Sylvie Willis
There is some discrepancy over whether the Mitsubishi Eclipse 4G has a fuel filter. Some sources suggest that there is no fuel filter, while others state that there is a sock filter located on the fuel pump. It is worth noting that fuel injectors clogging is considered a thing of the past, as most gas contains fuel injector cleaners by default. Additionally, fuel additives are federally mandated by the EPA for street use, which further reduces the risk of clogging. However, it is recommended to use a good fuel brand and add fuel injector cleaner during every oil change as a preventative measure.
| Characteristics | Values |
|---|---|
| Fuel filter | Located on the fuel pump, it is a sock filter |
| Fuel injectors | Clogging is rare due to fuel injector cleaners in fuel |
| Fuel additives | Federally mandated EPA minimum fuel additives in the USA |
| Fuel economy | Replacing fuel injectors does not increase fuel economy |
| Fuel filter replacement | Mitsubishi does not consider it a general service item, but it will need to be replaced eventually |
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What You'll Learn
The 4G Eclipse has a fuel filter in the pump housing
The 4G Eclipse does have a fuel filter, but it is not considered a general service item by Mitsubishi. This means that while the fuel filter will eventually wear out and need to be replaced, it is not something that Mitsubishi recommends regularly servicing. The fuel filter is located in the pump housing, and accessing it can be a bit involved. First, it is recommended to get the fuel level down as low as possible. Then, you need to pull out the rear seat bottom by pulling up on the latches on the front and between the legs of each seat. Once you have accessed the fuel pump housing, you can locate the fuel filter, which is a sock filter.
It is important to note that while fuel injector clogging used to be a common issue, it is now rare due to the inclusion of fuel injector cleaners in most gas by default. Federally mandated EPA minimum fuel additives are required for all gasoline for street use, and even higher levels of additives are often included in premium fuels from name-brand stations. As a result, fuel injector clogging is now typically only an issue when major debris is sucked up when not running filters.
If you are experiencing issues with your 4G Eclipse's fuel system, such as the car stuttering and dying when coming away from red lights, there are a few potential causes and troubleshooting steps you can take. One potential cause is a clogged fuel filter, which can restrict fuel flow and cause the engine to stutter or die. In this case, replacing the fuel filter may resolve the issue. Additionally, ensuring that you are using high-quality fuel from reputable brands can help reduce the likelihood of fuel system problems.
Another potential cause of fuel system issues could be related to the spark plugs or the valve cover gasket. Replacing these components may improve fuel economy and engine performance. It is also recommended to consult a professional mechanic to properly diagnose and address any fuel system issues. They may recommend additional steps, such as using a fuel injector cleaner or upgrading certain components, to ensure optimal performance and maintain the health of your vehicle.
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Fuel injectors clogging is uncommon due to fuel additives
The 4G Eclipse does have a fuel filter, contrary to what some owners may believe. It is located in the pump housing, under the back seat. While fuel injectors can become clogged due to hydrocarbons, sediment, and other elements in the fuel, this is uncommon in modern vehicles due to the use of fuel additives and injector cleaners.
Fuel injectors become clogged when debris, sediment, or varnish builds up between the pintle shaft and injector body. This can be caused by ethanol in the fuel drawing moisture from the air, leading to rust, or by fuel being left in the tank for long periods, causing gumming. However, regular use of fuel injector cleaners and high-quality fuel can prevent these issues.
Some sources recommend using fuel injector cleaner with every oil change to prevent clogging. While fuel injector cleaners can be effective, it is important to note that they can also exacerbate the problem if not used correctly. The cleaner loosens debris, which can then be pumped into the fuel injectors, causing further clogging. Therefore, it is recommended that the filter basket be removed and cleaned or replaced to properly unclog fuel injectors.
Additionally, diagnosing clogged fuel injectors can be difficult as they exhibit similar symptoms to other issues, such as bad coils, dead spark plugs, or electrical problems. A dead fuel injector, for example, acts the same as a clogged injector but cannot be repaired and must be replaced. Proper diagnosis is essential to ensure the correct course of action is taken.
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The fuel filter is accessible by removing the rear seat bottom
The fuel filter is an essential component of a car's fuel system, and regular maintenance is required to ensure its proper functioning. While the fuel filter is not considered a general service item by Mitsubishi, it will eventually wear out and get clogged, necessitating replacement.
The fuel filter in the Mitsubishi Eclipse 4G is located in the pump housing, and it can be accessed by removing the rear seat bottom. Here is a step-by-step guide on how to access the fuel filter in the Mitsubishi Eclipse 4G:
- Lower the fuel level as much as possible.
- Pull up on the latches at the front and between the legs of each rear seat to remove the rear seat bottom.
- Undo the cover on the driver's side to access the fuel basket.
- Disconnect the electrical plugs and carefully disconnect the main fuel line.
- With the rear seat bottom removed, you will now have access to the fuel filter for inspection, maintenance, or replacement.
It is important to note that before replacing the fuel filter, you should compare it with the new one to ensure they have the same outside diameter and nozzle sizes. Additionally, refer to your vehicle's service manual for specific instructions and safety precautions.
By following these steps, you will be able to access the fuel filter of the Mitsubishi Eclipse 4G by removing the rear seat bottom, making it more convenient for maintenance and reducing the time and cost associated with dropping the entire fuel tank.
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Bad fuel filters can cause the car to stutter and die
While it is unclear whether the 4G Eclipse has a fuel filter, bad fuel filters can cause a car to stutter and die. Fuel filters are designed to trap dirt, rust, scale, and other impurities to prevent them from entering the fuel pump, fuel injectors, and engine. When a fuel filter becomes clogged, it can cause low fuel pressure, leading to engine misfires, decreased power, and rough idling. This can cause the engine to stutter, surge, sputter, or stall while driving. In some cases, the car may cut off completely or have difficulty starting.
A clogged fuel filter may cause more prominent issues when the engine is under heavy loads or during acceleration, especially up a steep incline. This is because the clogged filter restricts the fuel flow, starving the engine of the extra fuel it needs under hard acceleration. As a result, the engine may hesitate, stutter, or surge as it attempts to compensate for the insufficient fuel supply.
The severity of the symptoms will depend on the extent of the clog. A partially clogged filter may cause intermittent issues, with varying amounts of fuel able to pass through. However, as the clog worsens, the fuel delivery becomes more sporadic, leading to excessive stalling, particularly during acceleration. Eventually, the filter can become completely blocked, preventing the engine from receiving any fuel and causing it to stall or fail to start.
It is important to note that a clogged fuel filter can also lead to other problems in the fuel system. Contaminants that bypass a dirty filter can damage or clog fuel injectors, leading to leaks and further engine problems. Therefore, it is crucial to regularly service or replace fuel filters to maintain optimal engine performance and prevent more severe issues from occurring.
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Replacing fuel injectors does not increase fuel economy
The 4G Eclipse does have a fuel filter, however, it is not considered a general service item by Mitsubishi. The fuel filter is located in the pump housing, and to access it, one must lower the fuel level, remove the rear seat bottom, and undo the cover on the driver's side. While it is not typically necessary to replace the fuel filter, it can become clogged or worn over time and may need replacement.
Now, regarding the topic of fuel injectors and fuel economy, simply replacing fuel injectors will not directly lead to an increase in fuel economy. In fact, several Honda CR-V owners have reported a decrease in fuel economy immediately after having their fuel injectors replaced. There are various factors that can influence fuel economy, and the impact of replacing fuel injectors is complex and dependent on multiple variables.
One possible explanation for a decrease in fuel economy after replacing fuel injectors is that the vehicle's computer may be using learned data from the previous injectors, and it may take several miles of driving for the system to adjust to the new injectors. Additionally, factors such as seasonal changes in gas formulation, tire pressure, and the use of air conditioning can also impact fuel efficiency.
It is worth noting that maintaining and replacing fuel injectors when necessary is still important for overall vehicle performance and longevity. Regular use of fuel injector cleaners can help prevent issues, and ensuring that high-quality fuel is used can also reduce the likelihood of problems with fuel injectors. While replacing fuel injectors may not immediately improve fuel economy, it can address issues that could lead to long-term damage or inefficient engine performance if left unattended.
In summary, while replacing fuel injectors is an important part of vehicle maintenance, it is not a guaranteed way to increase fuel economy. Fuel economy is influenced by a range of factors, and the impact of replacing fuel injectors can vary depending on specific circumstances and vehicle characteristics.
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Frequently asked questions
The 4G Eclipse does have a fuel filter, but it is located within the fuel pump housing.
The fuel filter is located within the fuel pump housing. To access it, you need to lower the fuel level, remove the rear seat bottom, and then undo the cover on the driver's side.
Yes, most gas contains fuel injector cleaners by default, especially in the US where it is federally mandated.
No, fuel injectors rarely need to be replaced unless there is major debris from not running filters.
Symptoms of a bad fuel filter include the car stuttering and dying, especially at lower RPMs.
