Sylvie Willis
The fuel tank in a Lund boat is typically located under the floorboard. Depending on the make and model of the boat, there may be one or two vents coming out of the side of the boat. These vents provide proper ventilation, prevent the tank from becoming pressurized, and allow air to escape during fueling. It is important to regularly inspect the fuel hoses and vents for any signs of wear and tear, as they can become brittle, cracked, or damaged over time. Additionally, monitoring fuel levels is crucial to prevent overfilling, which can create a fire hazard.
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What You'll Learn
Fuel tank location
The fuel tank in a Lund boat is typically located under the floorboard. For example, a 1990 Lund boat has one gas tank under the floor and two vents coming out of the side. The two vents are there to provide optimum ventilation and prevent the tank from building up pressure. The vent at the back end of the tank allows air to escape during fuelling and maintains proper pressure in the tank during normal operation. This vent should be unobstructed and lead to an opening on the side of the boat. The other vent, which has a P-trap, leads to the front of the tank and prevents water or debris from entering.
It is important to monitor the fuel levels in a Lund boat to prevent overfilling, which can cause fuel to escape from the overflow vent and create a fire hazard. Additionally, the fuel hoses and vents should be regularly inspected for any signs of wear and tear, as they can become brittle, cracked, or damaged over time.
If you need to empty the fuel tank in a Lund boat, you can Unhook the fuel line at the primer ball and attach another hose to the end. Place a gas tank lower than the onboard tank and prime the ball. Once started, gravity will do the rest. Alternatively, you can run the motor until the gas is gone, or use a pump to transfer the fuel to another tank.
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Fuel tank vents
A fuel tank vent is an important component of a boat's fuel system. Its purpose is to provide ventilation and prevent the tank from building up pressure. Typically, two vents are installed on boats to ensure optimum ventilation.
The first vent, located at the back end of the tank, allows air to escape during fuelling and maintains proper pressure during normal operation. This vent should be unobstructed and lead to an opening on the side of the boat. It is important to ensure that this vent remains clear of debris and clogs, as blockages can cause fuel delivery issues and create a hazardous situation.
The second vent, often equipped with a P-trap, is designed to prevent water or debris from entering the tank. The P-trap acts as a barrier, preventing water from siphoning back into the fuel tank, which is especially crucial in rough water conditions or when the bow is submerged. Similar to the first vent, the P-trap vent should also lead to an opening on the side of the boat.
It is important to regularly inspect and maintain the fuel tank vents. Over time, the fuel hoses and vents can become brittle, cracked, or damaged, affecting their performance. When installing or maintaining the vents, it is crucial to avoid creating sags or traps in the vent lines, as these can trap fuel and hinder the proper functioning of the vent system.
Additionally, consider using a fuel surge protector or a no-spill valve to prevent fuel from spilling out of the vent when filling the tank. This not only reduces environmental impact but also keeps the hull clean and free from stains caused by spilled fuel.
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Fuel tank maintenance
Check for Leaks and Odours
It is important to regularly inspect your Lund boat's fuel tank for any signs of fuel leaks or odours. These could indicate an issue with the tank or fuel lines that requires immediate attention.
Monitor Fuel Levels
As Lund boats typically have two vents to provide proper ventilation and prevent pressure build-up, it is crucial to monitor the fuel level to prevent overfilling. Overfilling can lead to fuel escaping from the overflow vent, creating a fire hazard. Always follow the manufacturer's guidelines for fuel capacity.
Inspect and Maintain Hoses
The fuel hoses and vents can become brittle, cracked, or damaged over time. Ensure that the hoses are securely attached to the tank and inspect them regularly for any signs of wear and tear. Replace the hoses if necessary to maintain the integrity of the fuel system.
Clean the Fuel Tank
Fuel tanks can accumulate debris, sludge, water, and other contaminants over time, leading to engine problems and reduced performance. Clean your fuel tank at least once a season, especially before winter storage. If possible, remove the fuel tank from the boat for easier cleaning. Use a flashlight to inspect the inside of the tank, and clean it with clean rags or paper towels. For tougher deposits, use a fuel tank cleaner or marine detergent. Rinse the tank thoroughly and ensure it is completely dry before reassembling.
Understand Your Fuel
To mitigate frequent cleanings, it is important to understand the source and composition of your fuel. Keep a sample of your fuel in a glass mason jar to monitor for any signs of degradation or separation. Additionally, consider using a fuel stabilizer at each fill-up to prevent phase separation and manual cleaning.
Fuel Polishing and Replacement
If you notice significant contamination or performance issues, consider professional fuel polishing to remove organic materials and contaminants. In extreme cases, the entire fuel tank may need to be replaced.
By following these maintenance steps, you can ensure the longevity, performance, and safety of your Lund boat's fuel system.
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Fuel tank emptying
There are a few methods to empty your boat's fuel tank, with the most common being the use of a fuel pump to siphon the fuel out. This can be done with a manual or electric pump, with the former being a cheaper option and the latter being more efficient. If you opt for a manual pump, you will need to run the pump manually and ensure you have a fuel hose attached to it. Most kits come with a 3/8-inch fuel hose, but you may need to purchase one separately. You will also need an appropriate fuel container to capture the fuel as it is being siphoned.
Electric pumps are pricier, ranging from $150 to $300, but they are more efficient and easier to use. You will need an extension cord to operate an electric pump and a fuel container to catch the fuel. Siphoning the fuel out of your tank can be done cheaply, depending on the type of pump you use, and the necessary equipment can be found at your local marina store.
Another method to empty your fuel tank is to unhook the fuel line at the primer ball and attach a hose to the end. Place a gas tank lower than the onboard tank and prime the ball to allow gravity to do the rest. Alternatively, you can simply run the motor until all the gas is gone.
Emptying your fuel tank is typically done before off-season storage to prevent residue build-up and engine issues. It is recommended to use a fuel stabiliser to prevent these issues, which should be added before your final fill-up of the season. Additionally, keeping your tank full or close to full can help reduce the chance of condensation and moisture build-up.
If you are emptying your fuel tank as part of a cleaning process, there are a few additional steps to take. After siphoning the fuel, rinse the tank with fresh water and let it dry. Use absorbent cloths to eliminate any remaining sludge, and if possible, use an endoscopic camera to inspect the inside of the tank. Fill the tank with alcohol or diluted detergent, let it stand, and then suction it out. Finally, use a pressure washer to clean the inside of the tank, suction out the water, and repeat the process until the tank is completely clean.
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Fuel tank leaks
If you suspect a fuel leak in your Lund boat, the first step is to turn on the bilge blower to clear out any fumes. Be sure that the blower fan is rated for ignition protection to avoid any accidents. Next, open all hatches to prevent fumes from accumulating and remove any coverings from the boat.
To locate the source of the leak, start by checking the fuel hoses and vents for any signs of damage or wear and tear. If the problem is not apparent, you may need to inspect other components of the fuel system, such as the fuel pump, fuel filters, water separators, and fuel lines. Every fitting needs to be checked, and if you have a primer bulb or an electric fuel pump, these should also be examined carefully.
If you cannot identify the leak, there are test kits available that use dye added to the fuel, which can help pinpoint the source. Once the leak is found, you may be able to fix it yourself if it is a simple issue, like a hose replacement. However, if the problem is with the fuel tank itself, repairs are not advisable from a safety standpoint, especially if you plan to take your boat offshore or deep-sea fishing. In such cases, it is best to seek professional assistance.
Finally, dispose of any fuel spilled during the leak by finding someone who can use it for their boat or vehicle. If you plan to keep it for yourself, add a stabilizer to prevent it from going bad in storage. Remember, it is illegal to dump fuel or any other contaminants into waterways, so never use your bilge pump to jettison fuel or dispose of it on the ground if your boat is on a trailer.
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Frequently asked questions
The fuel tank in a Lund boat is located under the floorboard.
To empty the fuel tank, you can unhook the fuel line at the primer ball and attach a hose to the end. Place a gas tank lower than the onboard tank and prime the ball. Gravity should then drain the fuel.
If you notice any fuel leaks or smells, inspect the hoses for any signs of wear and tear. Replace them if necessary and ensure they are securely attached to the tank.
