Sylvie Willis
Fuel tank strainers are important for keeping your fuel system free of debris and contaminants. They are often located inside the tank or in the filler neck, and they can become clogged over time, leading to issues with engine performance. To add a strainer to your fuel tank, you will need to purchase a compatible strainer and install it in the filler neck or inside the tank. This may require some tools such as pliers or a wrench for removal and installation. Additionally, it is important to regularly clean or replace the strainer to maintain optimal fuel system performance.
How to add a strainer to a fuel tank
| Characteristics | Values |
|---|---|
| Strainer removal | Use a strap wrench, belt and crowbar, or a chain strap wrench. |
| Strainer type | Metal, inverted witches hat, or tea strainer. |
| Strainer location | Inside the fuel tank, in the filler neck, or on top of the gas tank. |
| Strainer maintenance | Clean or replace with new strainers regularly to maintain the fuel system. |
| Strainer function | Prevents debris, insects, and leaves from clogging the fuel tank outlet. |
| Strainer purchase | Available on Amazon or eBay for a range of vehicle models. |
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What You'll Learn
Removing a fuel tank strainer
To remove a fuel tank strainer, you will first need to drain the tank. Place a container underneath the tank to collect the fuel.
If your vehicle has a cover for the fuel pump, remove this first. It will have a strap holding it to the bottom of the fuel tank and a single bolt near the wheel well. Next, locate the fuel line going from the bottom of the tank to the suction of the fuel pump. Using a flat-tip screwdriver, loosen the hose clamp at the fuel pump suction and disconnect the hose from the pump. Pinch the rubber fuel line using a hose clamp to stop the flow of fuel.
Once the tank is completely drained, loosen the hose clamp and the fuel tank outlet and remove the hose from the tank outlet nozzle. Using a 17 mm deep socket and ratchet or 17 mm wrench on the hex of the nozzle, turn counter-clockwise to remove the nozzle and strainer assembly.
The strainer will simply screw out, but break it loose with a socket first. As you loosen it, fuel will begin to flow past it, so loosen it gradually and let the fuel drain as you proceed. Do not rush this step, or you may end up with a fuel leak.
Once the strainer is removed, inspect it for debris built up on the outside of the screen. If there is a significant amount of debris, this may be a sign of a microbial infection of the fuel, and you should consider running a biocide in your fuel tank, following the manufacturer's instructions.
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Cleaning a fuel tank strainer
To clean a fuel tank strainer, you must first drain the fuel tank. This can be done by siphoning the tank or by using a vacuum to suck the fuel out. You can create a "suck bucket" by getting a 5-gallon bucket with a lid and attaching a hose from a shop vac to it. Make another hole in the lid for a smaller hose (3/8-5/16") and use this to vacuum out the tank. This will allow you to manipulate the smaller hose into smaller crevices in the tank and collect the fuel in the bucket rather than the vacuum.
Once the tank is drained, you can remove the strainer and clean it. The strainer is usually located inside the tank or in the filler neck. You may need to unscrew a big fitting on the bottom of the tank or remove the banjo bolt to access it. Be careful not to damage any seals in the process.
Inspect the strainer for debris built up on the outside of the screen. You can use a small probe to clean out any debris at the base of the strainer, but be careful not to poke a hole in the strainer. If the strainer is clogged, you can try backflushing fuel or carburetor and choke cleaner back through the nozzle. You can also blow low-pressure air (max 10 psig) back through the strainer nozzle to loosen debris.
If you discover any holes in the screen during cleaning, the strainer should be replaced. It is recommended to replace the strainer with a clean, new one to maintain the correct operation of the factory fuel pump.
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Replacing a fuel tank strainer
A fuel pump strainer is an integral part of the fuel pump assembly and is necessary for the factory fuel pump to operate correctly. It is recommended to replace the fuel pump strainer when the fuel pump fails. Here is a step-by-step guide on replacing a fuel tank strainer:
Step 1: Check the fuel level
Before beginning any work on your vehicle, it is important to check the fuel level gauge to determine approximately how much fuel is in the tank. If the gauge is not working or is inaccurate, assume that the tank is full and prepare containers to drain approximately 20 gallons of fuel.
Step 2: Disconnect the battery and jack up the vehicle
Disconnect the negative lead of the battery. Then, use a floor jack to raise the rear of the vehicle. For safety, place the rear of the vehicle on jack stands.
Step 3: Remove the fuel pump cover
If your vehicle is equipped with a cover for the fuel pump, remove it. Typically, the cover will have a strap holding it to the bottom of the fuel tank and a single bolt near the wheel well.
Step 4: Drain the fuel tank
To drain the fuel tank, use a hose clamp to pinch the line and stop the flow of fuel. Transfer the fuel to empty containers, ensuring they are clean to reuse the fuel later. Continue this process until the tank is completely drained.
Step 5: Remove the hose from the tank outlet nozzle
Loosen the hose clamp and the fuel tank outlet using a flat-tip screwdriver. Then, remove the hose from the tank outlet nozzle. The tank outlet is typically a larger round cover with a nozzle.
Step 6: Remove the nozzle and strainer assembly
Using a 17 mm deep socket and ratchet or a 17 mm wrench, turn the hex head at the base of the nozzle counter-clockwise to remove the nozzle and strainer assembly. Be aware that some additional fuel may drain from the tank when the strainer is removed.
Step 7: Inspect and clean the strainer
Once the strainer is out, inspect it for debris buildup on the outside of the screen. If there is debris, use a small probe to clean it out, being careful not to poke a hole in the strainer. You can also clean the strainer by backflushing fuel or carburetor and choke cleaner through the nozzle. If there are holes in the screen, the strainer should be replaced.
Step 8: Install the new strainer
If the strainer is contaminated or damaged beyond repair, install a new strainer. Ensure that the new strainer is clean and free of any debris. Follow the removal steps in reverse to install the new strainer and assemble the components back together.
Remember to consult a professional mechanic or a qualified technician if you are unsure about any part of the process or if you encounter any issues during the replacement.
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Using tools to remove a strainer
Firstly, it is crucial to ensure your safety. Disconnect the battery negative lead and raise the rear of the vehicle using a floor jack. For added stability and safety, place the rear of the vehicle on jack stands. If your vehicle has a cover for the fuel pump, remove it. The cover is usually held in place by a strap attached to the bottom of the fuel tank and a bolt near the wheel well.
Next, determine the fuel level in the tank. If the fuel level gauge is not functioning or is inaccurate, assume the tank is full and prepare containers to drain approximately 20 gallons of fuel. Draining the fuel tank is an important step as it allows access to the strainer and prevents fuel leakage during the removal process.
Once the tank is completely drained, use a flat-tip screwdriver to loosen the hose clamp connecting the fuel tank outlet and the hose. Remove the hose from the tank outlet nozzle. The tank outlet is typically a larger, round cover with a nozzle protruding from it.
At the base of the nozzle, you will find a hex head that is part of the nozzle assembly. Using a 17 mm deep socket and ratchet or a 17 mm wrench, turn the hex head counter-clockwise to detach the nozzle and strainer assembly. Make sure to have a container underneath the tank to catch any residual fuel that may drain from the strainer.
With the strainer removed, inspect it for any debris or buildup on the outside of the screen. If necessary, clean the strainer using a suitable method, such as vacuuming or flushing with a suitable solvent.
Finally, if you are installing a new strainer or reinstalling the cleaned strainer, follow the above steps in reverse. Ensure all connections are secure and properly tightened to prevent leaks. Refill the fuel tank and check for any signs of leakage before operating the vehicle.
It is important to consult the vehicle's repair manual or seek professional guidance if you are unsure about any steps or specific requirements of your vehicle's fuel system.
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Fuel tank strainer maintenance
Fuel tank strainers are important for keeping your fuel system free of debris and contaminants. Over time, they can become clogged, leading to fuel starvation and decreased engine performance. Here are some tips for maintaining your fuel tank strainer to keep it in optimal condition:
Regular Cleaning:
It is important to clean your fuel tank strainer periodically to remove any built-up debris. This can be done by first draining the fuel tank and then removing the strainer for cleaning. Some strainers may require special tools for removal, such as large adjustable pliers or a custom socket. Be cautious when handling the strainer as it may be covered in fuel.
Vacuum Cleaning:
One effective method for cleaning the strainer is to use a vacuum. A "suck bucket" can be created by attaching a hose from a shop vacuum to a 5-gallon bucket with a lid. By taping the hose securely and ensuring a tight seal, you can manipulate the smaller hose into crevices to remove gunk and debris. However, this method should only be used for diesel fuel tanks and not gasoline, as the vacuum motor's sparks can ignite gasoline fumes.
Over-the-Counter Cleaners:
Before attempting to remove and clean the strainer, you can try using over-the-counter tank cleaner products designed for boats or solvents such as paint thinner, turpentine, or kerosene to break down the gunk. These products can help dissolve or loosen any built-up contaminants, making it easier to clean the strainer.
Replacing the Strainer:
If your fuel tank strainer is severely clogged or damaged, it may be necessary to replace it. Fuel tank strainers are relatively inexpensive and easy to install. Replacing the strainer with a clean, new one can help ensure the proper functioning of your fuel system and prevent future issues.
Preventative Measures:
To reduce the frequency of strainer cleaning and maintenance, take preventative measures to keep debris out of your fuel tank. Always ensure the fuel cap is secure, and be cautious when filling the tank to avoid spilling fuel, as this can introduce contaminants. Additionally, consider using a pre-filter or in-line filter to help catch debris before it reaches the strainer.
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Frequently asked questions
Removing a fuel tank strainer can be a difficult job. First, drain the fuel tank. Then, you can use a monkey wrench or a strap wrench to remove the strainer. You may need to use large adjustable pliers or a special-order socket.
If you experience sudden, intermittent power declines, this could be due to a clogged fuel tank strainer.
You can use a pump to check if there is sludge in your tank without removing the strainer. If you are only able to pump out clean fuel, then the issue may lie elsewhere.
To prevent your fuel tank from clogging, you can use over-the-counter tank cleaner products for boats or paint thinner, turpentine, kerosene, or similar products to break down the gunk.
A cheaper alternative to adding a fuel strainer is to leave the fuel strainers in and replace them with clean new strainers. This is necessary for the factory fuel pump to operate correctly.
