
Draining water from the fuel filter of an EcoDiesel engine is a necessary maintenance task that should be performed every 10,000 miles, according to some sources. This process involves locating the fuel filter, which is positioned above the drive shaft, and draining the water that has settled at the bottom of the filter. While there is some debate about the effectiveness of the separator in the fuel system, it is recommended to drain the fuel filter and repriming the fuel system. Some users have suggested using tools like the fuel filter removal tool from Geno's and a brass drain screw for a more efficient process.
| Characteristics | Values |
|---|---|
| How often to drain water | Every 10,000 miles or 20,000 miles depending on the source |
| Tools required | Screwdriver, strap wrench, fuel filter removal tool, solid brass drain plug, plastic cup |
| Steps | 1. Use a screwdriver to crack open the yellow, plastic screw 2. If it does not drip freely, push up on the screw 3. Drain water into a container 4. If using the factory drain plug, ensure the o-ring is properly seated when re-tightening the plug 5. Cycle the ignition to enable the fuel pump and blow the fuel and water out of the drain 6. Prime the pump by turning on the ignition several times without starting the engine |
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What You'll Learn

Drain the water from the fuel filter every 10k miles
It is recommended to drain the water from the fuel filter every 10,000 miles. This process can be done by following these steps:
- Locate the fuel filter: The fuel filter is located above the rear driveshaft, near the muffler.
- Gather the necessary tools: You will need a screwdriver to open the yellow, plastic screw on the fuel filter. Additionally, consider using a strap wrench to loosen the filter housing.
- Place a container underneath the fuel filter: Use a container such as an ice cream bucket or a plastic cup to collect the drained fluid. This will allow you to inspect the fluid for water droplets and prevent spills.
- Open the drain screw: Use the screwdriver to carefully open the drain screw. If the fluid does not drip freely, gently push up on the screw to facilitate drainage.
- Inspect the drained fluid: Water is denser than fuel, so it will settle at the bottom of the filter and be the first to come out. If you do not see water immediately, close the drain screw to avoid wasting fuel.
- Reprime the fuel system: After draining, remember to reprime the fuel system by pushing the ignition button or turning the key a few times without starting the engine. This will ensure the proper functioning of the fuel pump.
It is important to consult the owner's manual for specific instructions and to take appropriate safety precautions during the drainage process. Additionally, consider using tools such as the fuel filter removal tool from Geno's and their brass drain screw for a more effective drainage process.
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Use a strap wrench to crack the filter housing loose
To crack the filter housing loose with a strap wrench, you'll need to follow a few steps. First, locate the filter housing and ensure you have the right size of strap wrench for the job. Adjust the strap wrench to the correct size if necessary.
Position the strap wrench around the filter housing, ensuring a tight fit. You may need to apply some force to get the strap wrench in place securely. Once the wrench is in position, turn it in the direction you need to loosen the filter housing. You may need to apply some force, but be careful not to over-tighten the wrench, as this can lead to cracking or breaking the housing or pipes.
If you're having difficulty, you can try using two filter wrenches for added strength, or try oil filter pliers. You can also apply some plumber's grease to the gasket to make it easier to remove. It's important to relieve the water pressure in the line before attempting to loosen the housing.
Strap wrenches are a useful tool for filter removal and replacements, and they can also be used for other tasks like opening cans and as a pipe wrench.
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Drain water without removing the filter
To drain water from the fuel filter of an EcoDiesel Ram 1500 Truck, the fuel filter is located above the drive/prop shaft in front of the rear differential.
One method to drain the water without removing the filter is to use a strap wrench to crack the filter housing loose. You can then fiddle with the plug until the water completely drains.
Another method is to use a Fumoto valve or a brass drain plug, which can be purchased from Geno's Garage. This will allow the housing to drain completely.
A third option is to install a petcock drain valve on the fuel filter canister. This will allow you to turn a valve to release the fuel and water without removing the filter.
When draining water from the fuel filter, it is important to place a container underneath to catch the fluid and to be aware that diesel fuel will also be drained. Water is denser than fuel, so it will settle at the bottom of the filter and be the first thing to come out when draining. If you do not see water immediately, push the screw back in to avoid wasting fuel.
After draining water from the fuel filter, it is important to reprime the fuel system. This can be done by pressing the ignition button twice without your foot on the brake to put it in the RUN position, allowing the fuel pump to run for about 30 seconds. Repeat this process 2-3 times or as many times as needed.
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Prime the pump by turning on the ignition
To prime the pump, you need to turn on the ignition. This is a crucial step in the process of draining water from the fuel filter of an EcoDiesel engine. It is important to note that you should turn on the ignition without actually starting the engine. This process is known as "key cycling" and is done to ensure that the fuel system is reprimed.
For push-button start trucks, you need to push the start button with your foot off the brake. This action will put the truck into "run" mode without starting the engine. Repeat this step a couple of times. If you have a keyed start truck, simply cycle the key to the "run" position a few times without starting the engine.
Priming the pump is an essential step to ensure the proper functioning of your EcoDiesel engine after draining water from the fuel filter. It helps to ensure that the fuel system is ready for operation and can also assist in identifying any potential issues, such as the engine not starting due to other underlying problems.
It is worth noting that some sources suggest that if the ""water in fuel" light does not come on, you may not need to turn on the ignition to purge using the fuel pump. However, it is generally recommended to prime the pump by turning on the ignition to ensure optimal performance.
Additionally, when dealing with fuel and engine maintenance, it is always important to refer to the specific instructions provided by the manufacturer for your particular vehicle model. This ensures that you are following the correct procedures and taking any necessary precautions for your specific EcoDiesel engine.
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Use a fuel filter removal tool
The fuel filter on the Ram 1500 EcoDiesel truck is located underneath the bed of the truck, about mid-way back and just to the left of the centre. The fuel filter removal tool is designed to fit snugly onto the bottom of the fuel filter canister and grab the four tabs on the outside, making removal easier.
The fuel filter housing removal tool is heavy-duty and works well, especially when used with the brass drain plug. The plug drains the filter housing of both fuel and separated water. The tool is highly recommended by users, who say it makes the job a lot easier and is a "must-have" in your toolbox.
One user review states that they watched a YouTube video and read about the tool on a Ram EcoD forum before purchasing. They highly recommend the kit and brass drain plug, as the factory screw does not release about 2 of the 14 oz that will drain from the filter housing.
Another user review mentions that they used the tool to change their fuel filter at the firehouse, and it made the job a lot easier. They also found the tips in the video on the Geno's Garage website helpful in making the process cleaner.
A third review mentions that they are a first-time diesel owner and that the tool made their life a lot easier. They also mention that they previously purchased a cabin air filter from Geno's Garage and had a great experience.
The fuel filter removal tool is a great investment for anyone looking to do their own fuel filter changes on the Ram 1500 EcoDiesel truck. It simplifies the process, ensures a cleaner job, and can save you money compared to getting the dealer to do it.
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Frequently asked questions
It is recommended to drain the water from the fuel filter every 10,000 miles.
The fuel filter is located above the rear driveshaft, near the muffler.
First, take a screwdriver and crack open the yellow, plastic screw. This will allow the fluid to drip out. If it does not drip, push up on the screw briefly. Check if water is coming out—if it is not, push the screw back in.
You can use a strap wrench to loosen the filter housing. You can also use the fuel filter removal tool from Geno's, which comes with a brass drain screw.











































