Sylvie Willis
Whether or not to delete the fuel filter on a Duramax engine is a topic of debate among vehicle enthusiasts. Some argue that deleting the factory fuel filter can improve fuel flow and reduce maintenance costs, while others highlight the benefits of additional filtration and the potential for disaster if the lift pump fails. The decision to delete the fuel filter may depend on factors such as the presence of a lift pump, the vehicle's mileage, and the owner's preference for filtration level and maintenance complexity.
Characteristics and values of deleting the fuel filter in Duramax
| Characteristics | Values |
|---|---|
| Pros | Additional filtering and prevention of disaster |
| Higher filtration than factory filters | |
| More pressure in the system | |
| Less maintenance | |
| Cons | Potential for restricting fuel flow |
| Prone to leaks | |
| Loss of pressure | |
| Higher cost of maintenance |
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What You'll Learn
- The stock Duramax filter provides good filtration and has a manual priming pump
- Deleting the stock filter may cause issues with bad fuel or water in the system
- The factory filter can be kept and bypassed with a hose or adapter
- The factory filter is prone to leaking and may need to be replaced
- The factory filter can be deleted if using an aftermarket filtration system
The stock Duramax filter provides good filtration and has a manual priming pump
One user on the Duramax forum reported that they were glad they kept the stock filter on their 2011 model as they got some bad fuel (with water in it). They drained about 2" of water from a 20oz bottle out of the stock filter after the WIF light came on. Another user agreed, saying that deleting the stock filter is "one of the dumber things anyone could think of doing". They explain that if the lift pump fails, you're "totally screwed".
However, some people do choose to delete the stock filter. One user on the Duramax forum says that they would leave it in place and only service it when the DIC tells them to. They explain that with a 165GPH pump supplying it, it's not restricting anything. Another user agrees, saying that the flow rate on the filter head is 50GPH, so it's unlikely that you'll get close to 50GPH consumption, much less the overkill LP at 165GPH.
Another user on the Duramax forum says that they kept the factory filter system because of the priming mechanism. However, they bypassed it because it kept leaking.
Ultimately, the decision to delete the stock Duramax filter is a personal one. Some people choose to delete it to simplify the system and reduce maintenance costs, while others choose to keep it for the additional filtration and protection it provides.
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Deleting the stock filter may cause issues with bad fuel or water in the system
One user reported that they were glad they kept the stock filter on their 2011 model as they got some bad fuel with water in it. They drained about 2" of water from a 20-ounce pop bottle out of the fass water separator and about 1" out of the stock filter. They said they "hate to think what might have happened to the CP4 without the stock racor filter in place."
Another user reported that they kept the factory filter system because of the priming mechanism. They also reported that they bypassed the factory filter head but kept it in the engine bay in case they ever needed to manually prime the system.
The stock filter also provides additional filtering and can help prevent a disaster at a low expense of around $100. One user reported that they were down to 25% on the DIC for fuel filter usage and would not be deleting the stock filter anytime soon.
While some users have reported success with deleting the stock filter, it is important to consider the potential risks, especially if you are using bad fuel or if there is water in the system. It is always better to have additional filtration and protection against water contamination in your fuel system.
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The factory filter can be kept and bypassed with a hose or adapter
The factory fuel filter on a Duramax engine can be kept and bypassed with a hose or adapter. This is a viable option for those who want to retain the additional level of filtration that the factory filter provides while also addressing potential issues with fuel flow restriction and leaks.
The factory fuel filter on a Duramax engine plays a crucial role in filtration. However, some owners may consider deleting it due to concerns about restricting fuel flow. Instead of outright deletion, an alternative approach is to bypass the factory filter using a hose or adapter. This modification allows fuel to bypass the factory filter, addressing any potential flow restrictions while still retaining the filter in the system.
One advantage of bypassing the factory filter with a hose or adapter is the added protection it provides. The factory filter acts as an additional layer of filtration, which can be beneficial in preventing potential issues caused by contaminated fuel. By keeping the factory filter in the system, even if it is bypassed, owners can maintain this extra layer of protection.
Another benefit of bypassing the factory filter is the ability to address leaks. Some Duramax owners have reported issues with the factory filter leaking, which can be a source of frustration and lead to potential performance problems. By bypassing the factory filter and retaining it in the system, owners can mitigate the risk of leaks while still benefiting from the additional filtration it offers.
When bypassing the factory filter, it is important to consider the specific setup of your Duramax engine. Some owners have shared their experiences and recommended keeping the factory filter in the engine bay, allowing for easy access in case manual priming is required. Additionally, it is crucial to follow proper installation procedures and ensure that any necessary hardware or adapters are compatible with your specific Duramax model and year.
In conclusion, bypassing the factory filter on a Duramax engine with a hose or adapter is a viable option for those who want to retain the additional filtration it provides while addressing potential flow restriction and leak concerns. By implementing this modification, Duramax owners can strike a balance between fuel flow efficiency and the added protection of the factory filter.
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The factory filter is prone to leaking and may need to be replaced
The factory filter on a Duramax engine is prone to leaking and may need to be replaced. While some people choose to delete the factory filter altogether, others opt to keep it as a precautionary measure.
The factory filter on a Duramax engine has been reported to leak by some users. This could be due to various reasons such as faulty seals or manufacturing defects. If the factory filter is leaking, it is important to address the issue promptly to prevent further problems. In some cases, the factory filter may be bypassed using a hose or a bypass adapter, but it is generally recommended to keep the factory filter intact for added protection.
One of the main reasons for keeping the factory filter is to have additional filtration and prevent potential disasters. The factory filter acts as a secondary layer of protection, reducing the risk of fuel-related issues. Additionally, the factory filter can help with the manual priming of the system, which may be necessary in certain situations.
However, deleting the factory filter can be beneficial in certain scenarios. For example, if the factory filter is prone to leaking and causing repeated issues, it may be more cost-effective and convenient to remove it entirely. Additionally, some aftermarket lift pumps offer better filtration compared to the stock factory filter, rendering it less necessary.
Ultimately, the decision to delete or replace the factory filter depends on various factors, including the specific Duramax model, the presence of aftermarket modifications, and personal preferences. It is always recommended to consult with a trusted mechanic or Duramax specialist before making any significant changes to the fuel system.
By considering the advantages and disadvantages of deleting the factory filter, Duramax owners can make informed decisions that align with their specific needs and priorities. Regular maintenance and monitoring of the fuel system, including the factory filter, are crucial to ensure optimal performance and longevity.
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The factory filter can be deleted if using an aftermarket filtration system
The factory fuel filter on a Duramax engine can be deleted if using an aftermarket filtration system. The factory fuel filter is located after the aftermarket filtration system, so it is no longer required and can be removed. This will allow fuel to flow more freely into the engine.
There are a few ways to delete the factory fuel filter. One way is to use a fuel filter delete kit, such as the FASS Fuel Systems Duramax Factory Fuel Filter Delete Kit. This kit comes with all the required hardware for a professional installation and is designed to be used with an aftermarket filtration system. Another way to delete the factory fuel filter is to use a bypass adapter, which routes the fuel lines directly to the cp3 intake fuel lines. This method only costs around $20, but it is important to note that the factory filter system has a priming mechanism that can be useful.
Some people choose to delete the factory fuel filter on their Duramax engine because they believe it restricts fuel flow. However, others argue that the stock fuel filter has good filtration and won't need to be changed as often as a lift pump. Additionally, the factory fuel filter can provide extra protection in the event of a lift pump failure, as it can be used to prime the fuel system.
Overall, the decision to delete the factory fuel filter on a Duramax engine comes down to personal preference and the specific needs of the vehicle. If you choose to delete the factory fuel filter, it is important to ensure that you have a reliable aftermarket filtration system in place.
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Frequently asked questions
A fuel filter is a part of a vehicle's fuel system that filters out dirt and other contaminants from the fuel before it reaches the engine.
Some people choose to delete their Duramax's factory fuel filter because they believe it restricts fuel flow and is prone to leaking. However, others argue that it provides additional filtration and can prevent disasters, such as water in the fuel.
Deleting the factory fuel filter can increase the risk of fuel system issues, such as leaks and loss of pressure. It can also result in higher maintenance costs due to the need to replace aftermarket filters more frequently. Additionally, without a factory filter, there is no way to prime the fuel system in the event of a lift pump failure.
