Katerina Swanson
Fuel tank pickup tubes are an essential component of fuel delivery systems, but issues with the tubes can lead to fuel delivery problems. Obstruction in the pickup tube or the filter can restrict fuel flow, resulting in dribbling or no fuel coming out of the tank. To resolve this, compressed air can be blown into the tank to clear any debris or obstructions. When installing a new fuel pickup tube, it is important to consider the size of the tube and the material used, such as aluminum, copper, or nylon. The installation process may involve removing the fuel level sender and creating a new hole for the tube, but it is crucial to ensure that the new fitting does not interrupt the flow of fuel out of the tank.
Characteristics and Values of Running a Fuel Tank Pickup Tube
| Characteristics | Values |
|---|---|
| Materials | Copper, Bronze, Aluminum, Stainless Steel |
| Tools | Shop-vac, Gas Welding Rod, Drill, Hole Saw, Pipe Thread Taps |
| Common Issues | Obstructions, Fuel Delivery Problems, Restriction in Tube or Filter |
| Common Vehicles | Boats, Marine, GMC Pickup Trucks, Buick, Pontiac |
| Tube Sizes | 1/2", 3/8", 5/8", 7/8" |
| Tube Types | Nylon, Copper, Bronze |
| Fittings | Aluminum, Bronze, Brass Anti-Siphon Valve |
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What You'll Learn
- Common issues with fuel tank pickup tubes include fuel delivery problems
- The pickup tube is mounted to a fitting in the front of the tank
- To remove the filter, you may need to run a rod through the tube
- A clean way to install a new pickup tube is to remove the fuel level sender
- You can also drill and tap a port for a heater fuel pickup tube
Common issues with fuel tank pickup tubes include fuel delivery problems
Contaminated fuel or water in the fuel tank can contribute to clogging issues. Water can enter the tank due to poor ventilation, which also increases the chances of rust formation. Additionally, the deterioration of the inner coating of the fuel tank, oxidation, and the buildup of fuel additives over time can all lead to restrictions in the pickup tube.
Damage or cracks in the pickup tube can result in fuel leaks, interrupting the fuel supply to the engine. Air leakage in the fuel system can also cause issues with fuel delivery. Keeping the tank clean, using high-quality fuel, and regularly replacing fuel filters are important preventative measures to avoid damage to the pickup tube and other components.
In some cases, a clogged or restricted pickup tube can lead to fuel starvation, causing performance issues such as engine stalling, reduced engine power, difficulty starting the engine, and increased fuel consumption. It is recommended to have a qualified mechanic diagnose and repair issues related to the fuel tank pickup tube to ensure the safe and efficient operation of the engine.
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The pickup tube is mounted to a fitting in the front of the tank
The pickup tube, also known as the supply tube, is mounted to a fitting in the front of the tank. It is positioned about 2 inches from the bottom of the tank. The tube then runs from there to the centre of the tank and bends downwards, with a filter on the end that nearly touches the bottom of the tank.
There are a few ways to install a new fuel pickup tube in an existing fuel tank. One way is to remove the fuel level sender and create a round aluminium plate with a hole in the centre for the fuel pickup. This method, however, results in the loss of the fuel level sender/gauge. Another way is to drill and tap a port for the pickup tube, using a shop-vac to remove debris and shavings.
When installing a new pickup tube, it is important to consider the size of the tube and the fitting. The tube should be large enough to accommodate the fuel supply line, and the fitting should match the size of the tube. For example, a 5/16" brake line can be threaded into a 1/4" pickup tube.
It is also important to ensure that there are no obstructions in the pickup tube or the filter, as this can restrict fuel flow. This can be checked by blowing air through the tube and observing if there is any restriction in the flow.
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To remove the filter, you may need to run a rod through the tube
One user suggested using a gas welding rod to knock off the filter. Before doing this, it is recommended to try blowing into the fuel line to check for any blockages. If the fuel line is clear, there may be no need to remove the filter.
Another suggestion is to use compressed air to blow out any debris or obstructions in the tube. This can be done by removing the gas cap and putting a rag over the opening to prevent fuel from blowing out. Then, insert compressed air into the hole and adjust the air pressure until air flows freely.
If the filter needs to be removed, you can try using a magnet to reach it through the sending unit hole, as one user successfully did. Alternatively, you may need to disassemble the fuel line and remove the fuel valve to access the tube and filter.
In some cases, the pickup tube may be welded to the tank, making it more challenging to remove the filter. It is important to exercise caution and seek professional advice if you are unsure about the process to avoid causing damage to the fuel tank or related systems.
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A clean way to install a new pickup tube is to remove the fuel level sender
Installing a new fuel pickup tube in an existing fuel tank can be a challenging task. One clean way to do this is by removing the fuel level sender. This process involves several steps and requires specific tools and materials. Firstly, it is important to disconnect the battery to disable the power to the fuel pump and sending unit. This can be done by parking the vehicle on a flat, hard surface, engaging the parking brake, and disconnecting the ground cable from the battery's negative post. Once the power is disabled, the fuel level sender can be removed by following the steps outlined by sources, which include removing the mounting bolts, pulling out the fuel pump and sender, and preparing the tank for the installation of the new pickup tube.
After removing the fuel level sender, the next step is to create a round aluminium plate, which will serve as the base for the new fuel pickup. This plate should be made out of 3/8 or 1/2 aluminium and drilled to match the pattern of the fuel level sender. The centre of the plate should then be drilled and tapped for the fuel pickup, which can be purchased from various suppliers. Aluminium is a material that is easy to work with, and pipe thread taps are readily available.
It is important to note that removing the fuel level sender will result in the loss of the fuel level sender/gauge. This may or may not be an issue, depending on the specific use case and the boat. Modern engines often provide information on fuel usage, which can help alleviate the need for a fuel level gauge. Additionally, an external tank gauge can be installed if desired.
Before drilling into the fuel tank, it is crucial to consider the thickness of the tank and the potential for debris to contaminate the fuel. Drilling into the tank can result in metal shreds ending up in the fuel, so it is important to have an access hole for cleaning and another fitting to address this issue. This process can be time-consuming and may require additional fittings and modifications.
Overall, removing the fuel level sender and installing a new fuel pickup tube involves multiple steps and considerations. It is important to carefully follow the instructions and take the necessary precautions to ensure a successful and safe installation.
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You can also drill and tap a port for a heater fuel pickup tube
Drilling and tapping a port for a heater fuel pickup tube requires careful planning and execution to avoid any fuel leaks or damage to the tank. Here is a step-by-step guide on how to do it:
Firstly, decide on the location of the port. Some people choose to drill into the top plate of the tank, just off to the side of the return line. It is important to space it out so that the pickup tube doesn't catch on the float or any other components. The type of pickup tube arrangement your heater has will also determine the location.
Next, you need to remove the fuel level sender or the sender unit to access the tank. This will allow you to create a round aluminium plate that matches the pattern of the sender unit. This plate will be drilled and tapped on centre for the fuel pickup. Alternatively, you can drill a new hole in the top of the tank to avoid losing the fuel level sender/gauge.
When drilling and tapping the port, it is crucial to use the correct size drill bit and pipe thread taps. Ensure the wall thickness is considered, as it will be very low once the thread is in place. Always coat the drill bit and tap with grease to minimise debris and shavings from falling into the tank. Using a spiral flute tap can also help reduce debris.
To catch any debris and shavings that may be generated during the drilling and tapping process, you can use a shop-vac to pressurise the tank through the fuel fill. This will blow out any debris, and a second shop-vac can be used to remove the shavings as they are created.
Finally, insert the fuel straw or pickup tube into the tapped port. Ensure it is cut to the correct length and shaped appropriately to avoid any interference with other components.
It is important to note that drilling and tapping a fuel tank requires careful planning and execution to avoid any fuel leaks or damage to the tank. It is always recommended to consult a professional or seek further advice if you are unsure about any steps.
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Frequently asked questions
A fuel tank pickup tube is a tube that runs from the front of the tank to the centre, then bends down to the bottom of the tank. It is used to draw fuel out.
There are various methods to install a fuel tank pickup tube. One way is to remove the fuel level sender and create a round aluminium plate that is drilled to the same pattern. You can then drill and tap a hole for the fuel pickup. Another way is to drill and tap a port for the tube, using a shop-vac to blow debris out.
If you are experiencing fuel delivery problems, there may be an obstruction in the pickup tube. Try blowing air through the tube and if very little comes out the other end, there is likely an obstruction.
