
Hooking up a transfer fuel tank to a truck is a potentially dangerous task due to the highly flammable nature of fuel. There are several methods to do this, depending on the type of vehicle. One common method is to use a siphon hose, which involves putting one end of the hose into the fuel tank, shaking the 'pump' (one-way valve) until the fuel starts to come out, and then putting the pump end into a jerry can. Another method is to use a hose and adapter for the pressure test port, which can be purchased at most parts stores. This method involves connecting the adapter to the pressure test port and then connecting the hose to the adapter. Finally, one can connect the power directly to the fuel pump from the vehicle's battery by connecting 87 and 30 on the fuse/relay panel side.
Characteristics and Values Table for Transferring Fuel to a Truck
| Characteristics | Values |
|---|---|
| Fuel Type | Gasoline, Diesel |
| Tools | Hose, Adapter, Funnel, Hand Pump, PVC Pipe, Vehicle Jack |
| Vehicle Parts | Fuel Rail, Fuel Line, Fuel Pump Relay, Battery |
| Safety | Ensure proper ventilation, No escaping fumes, No leaking gasoline |
| Fuel Storage | Jerry Can, Steel Drums, Transport Tank, Fuel Tank |
| Fuel Transfer Methods | Siphon Hose, Hand Pump, Hose with Adapter |
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What You'll Learn

Using a hose and adapter
First, locate the pressure test port on the fuel rail or feed line under the hood of your vehicle. This is usually found on fuel injection vehicles. You can purchase a hose and adapter for this port from most auto parts stores, often included in a fuel pressure gauge kit.
Once you have the necessary equipment, hook up the hose to the pressure test port. Then, locate the fuel pump relay, which should also be easily accessible under the hood. Common fuel pump relays will have four spades at the bottom, labelled 85, 86, 87, and 30. To provide power directly to the fuel pump from the vehicle's battery, connect 87 and 30 on the fuse/relay panel side.
Alternatively, you can use a portable battery pack, such as a cordless drill battery with an adapter. Make sure to ground the negative side to the frame and put the positive side into the 87 terminal slot. Drill batteries typically have a higher voltage than car batteries, which can speed up the pumping process.
If you're looking for a more cost-effective solution, you can visit a junkyard and find a hose that connects from the pipe leading to the fuel tank to the fuel rail.
When transferring fuel, it's important to take safety precautions. Ensure your vehicle is on an elevated parking spot, with the Jerry can below the tank. This will allow gravity to assist in the fuel transfer. Additionally, always be cautious when handling flammable liquids, and avoid smoking or any potential sources of ignition.
For those seeking a more sustainable fuel option, consider propane duel-fuelling kits. Propane can be stored for years without issue and is compatible with most spark ignition engines.
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Using a siphon hose
Preparing the Siphon Hose:
First, you'll need to obtain a suitable siphon hose. You can purchase one from an auto store or hardware store, ensuring it's long enough to reach both the truck's fuel tank and the transfer tank. It's also important to check if your car has any anti-siphon measures, as some modern vehicles have devices to prevent fuel theft.
Positioning the Vehicle:
Park your truck on a level surface and identify the fuel tank's location. Place the jerry can or transfer tank below the fuel tank to utilize gravity during the siphoning process. Ensure that the vehicle is turned off, and the engine is cool before proceeding.
Inserting the Siphon Hose:
Cut the end of the siphon hose at a sharp angle, which will help guide it past any anti-siphon screens or valves. You may need to use a screwdriver or a thin, sturdy stick to push or break through any obstructions in the filler tube. Exercise extreme caution during this step to avoid creating sparks that could ignite flammable gas vapors.
Starting the Siphon:
Insert one end of the siphon hose into the truck's fuel tank and ensure it is securely in place. Place the other end of the hose into the jerry can or transfer tank. You may need to shake the hose gently or use a hand pump to initiate the siphoning process and start the fuel flow.
Completing the Transfer:
Once the fuel begins to flow, gravity will take over, and the fuel will continue to transfer from the truck's tank to the lower-positioned jerry can. Monitor the process to ensure the hose doesn't become dislodged and to stop the transfer once the desired amount of fuel has been siphoned.
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Using a funnel
First, you need to choose the right funnel for the job. It is recommended to use a transmission funnel, which can be easily modified if needed. Ensure the funnel has a spout that is long enough to reach the tank opening.
Before beginning the transfer, it is important to take safety precautions. Fuel is highly flammable, so ensure you are in a well-ventilated area, away from any sources of ignition. It is also advisable to wear protective gear, such as gloves and eye protection, to shield yourself from any fuel spills or splashes.
Now, place your funnel securely over the opening of the transfer fuel tank. Ensure that the funnel is stable and won't tip over easily. If your vehicle has an anti-siphon mechanism, you may need to modify the funnel slightly. Cut off a small portion of the funnel's spout at a sharp angle, test it, and gradually trim more if needed until you can open the anti-theft flap.
With the funnel in place, you can now begin pouring the fuel carefully and slowly into the funnel. Ensure that the fuel goes directly into the funnel to avoid any spills or splashes. It is important to monitor the process closely to prevent overfilling the tank.
Once you have finished pouring the fuel, carefully remove the funnel and ensure that the transfer tank is securely sealed. If there are any spills or drips, clean them up immediately with appropriate absorbent materials.
By following these steps, you can safely and effectively use a funnel to transfer fuel from your truck's tank to a separate container. Remember always to handle fuel with caution and take the necessary safety measures.
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Using a small battery-operated pump
Using a battery-operated pump to transfer fuel from a tank to a truck is a convenient method, especially when mains power is not an option. Battery-operated fuel transfer pumps are widely available and can be used with gasoline, diesel, oil, and other non-corrosive liquids. They are popular due to their portability and ability to dispense fuel from various containers, such as tanks, IBCs, drums, or bowsers.
When choosing a battery-operated pump, consider the voltage of the pump and ensure it is compatible with the voltage of the battery you will be using. Vehicle batteries are typically 12-volt or 24-volt, and most battery-powered fuel transfer pumps are available in these voltages. Additionally, consider the flow rate of the pump, which refers to the speed at which it transfers fuel. A higher flow rate will result in faster fuel dispensing, which is essential for larger trucks with bigger tanks.
To use a battery-operated pump, simply connect the pump to the battery using cables and clips, similar to jump leads. You can connect the pump to the vehicle's battery or use a separate battery, such as a dedicated marine battery, and keep it charged using a trickle charger or a small solar panel. Some users recommend installing a power point at the rear of the tractor or truck to plug in the fuel pump, allowing for easy access and eliminating the need for a dedicated battery.
When purchasing a battery-operated fuel transfer pump, you can consider well-known brands such as Terapump, Deway, or Flo-Fast. These pumps offer different features and flow rates to suit your specific needs. Additionally, you can find affordable options, such as the $10 12-volt fuel pump mentioned by several users, which can be used with a PVC clear line and is suitable for both trucks and tractors.
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Safety precautions
When hooking up a transfer fuel tank to a truck, there are several safety precautions that must be followed to ensure the process is safe and compliant. Here are some detailed guidelines:
Planning and Maintenance
- Plan the work area for safety, ensuring proper ventilation in the fuel storage area.
- Regularly check the functionality of emergency equipment and ensure spill response kits are easily accessible.
- Conduct ongoing training for personnel involved in fuel handling.
- Update safety documentation and ensure compliance with relevant regulations.
Personal Protective Equipment (PPE)
- Wear high-visibility, fire-resistant clothing, including eye protection, hearing protection, and hand and foot protection.
- Use safety footwear to protect your feet from potential spills or accidents.
Fuel Storage and Transfer
- Store only the necessary amount of flammable liquid and limit hose length to 50 feet during the fuel transfer process.
- Use approved containers and portable fuel tanks, ensuring they are kept on the ground or a stable, low surface to minimize the risk of spills.
- Avoid storing fuel near exits or passages, and follow vehicle manuals for designated fueling areas.
Ignition and Fire Safety
- Remove or strictly control ignition sources within 25 feet of fuel transfer operations, including prohibiting open flames and smoking in the immediate area.
- Ensure fire safety equipment, including fire extinguishers, is well-maintained and easily accessible.
- Post "No Smoking" signs at all relevant areas, including loading racks, unloading risers, and access points.
Static Electricity Prevention
- Utilize a static bonding cable when transferring flammable liquids above their flash points to prevent static sparks.
- For top-loading operations, use explosion-proof wiring for electrical equipment within 3 to 15 feet of the fill connection.
- Ensure proper grounding to prevent static electricity buildup, especially when transferring Class II and Class III liquids.
Emergency Preparedness
- Understand emergency procedures and be prepared to evacuate the area and notify nearby individuals in case of a fuel-related emergency.
- Ensure tanks have liquid containment features, such as actuated valves that snap shut in the event of a fire, to minimize the risk of fuel spills and subsequent fires or environmental damage.
These safety precautions are crucial to minimize risks and ensure the safe handling and transfer of fuel. It is important to always prioritize safety and compliance when working with flammable liquids and fuel transfer operations.
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Frequently asked questions
There are a few ways to do this, but it is important to note that loading a tanker truck with fuel is a potentially dangerous situation due to the flammable nature of the fuel. Here are some steps to follow:
- Strap down and secure the fuel tank in the bed of your truck.
- Use a siphon hose to transfer the fuel. Put one end in the tank, shake the 'pump' (one-way valve) until the fuel starts to come out, then put the pump end in the truck's tank.
- Alternatively, take the fuel line off the engine and run the fuel pump directly from a 12V power source.
- If your vehicle has a pressure test port on the fuel rail or feed line under the hood, you can hook up a hose and adapter (usually found in a fuel pressure gauge kit).
- Connect 87 and 30 on the fuse/relay panel side to provide power directly to the fuel pump from the vehicle's battery.
Most fuel injection vehicles will have a pressure test port under the hood.
You can use a portable battery pack, like a cordless drill battery with an adapter. Just ground the negative side to the frame and put the positive side in the 87 terminal slot.
Steel diesel tanks work well and are available in various sizes, such as 36 or 55 gallons. You can also use a Jerry can, but keep in mind that gasoline is not ideal for storage. Propane, on the other hand, stores for years without issue.
First, the driver must verify that the loading area matches the type of fuel requested by the customer. Then, hook up the tanker truck's vapor exhaust port to the dispenser's vapor hose. The vapor will be deposited into a vapor tank. Ensure there are no escaping vapor fumes during the process as they are flammable. Once the tanker truck is fully loaded, turn off the dispensing pump and remove the hoses.











































