5 Helpful Tips On How To Drain Underfloor Fuel Tank

how to drain underfloor fuel tank
how to drain underfloor fuel tank

The best thing about an underfloor fuel tank is that it doesn’t move around when you’re maneuvering through rough water conditions. On top of that, you won’t have to concern yourself with saving extra space on the deck for the fuel tank. So, in most situations, it is best to stick with an underfloor tank if you need more space on the deck for a better fishing system. With that said, a lot of users have recently asked how to drain the underfloor fuel tanks. If you’re also confused about the same thing and don’t know how to remove the fuel, then the following details should help.

How To Drain Underfloor Fuel Tank 

While purchasing units from the second-hand market, it is always crucial to drain out the old fuel from the tank if you wish to protect the motor. Running the old fuel through the motor will lead to performance and efficiency issues. So, if you’re in a similar situation, then you should follow these steps to drain the underfloor tank.

  1. Start the process by accessing the fuel line connected to the fuel filter. You’ll be using this fuel line to drain out the tank. So, you don’t have to concern yourself with any extensive procedures of pumping out the fuel from the tank directly.
  2. Remove the fuel line connected to the filter and feed it into an empty container. Make sure not to pull or extend the fuel line out of shape, or you will end up damaging the valves.
  3. After feeding the fuel line into the container, you need to get yourself a breather line and feed it into the fuel tank. This will help accelerate the draining process, and your drain will be completely empty after the process.
  4. Now, you can use a compressor to increase the pressure inside the tank and remove all the residue left at the bottom of the tank. You don’t need to put excessive pressure on the tank, and just a steady pace should do the trick.
  5. Once the compressor is on, you just need to wait for all the fuel to drain out of the valve connected to the empty container. In some situations, it can also help to tilt the boat backward to create favorable conditions for the drainage. So, if you’re struggling to get a compressor, managing the angle and elevation of the boat should do the trick for draining the underfloor fuel tank.

All in all, these were a few basic steps that you should keep in mind if you don’t know how to drain an underfloor fuel tank. In most situations, you won’t have to deal with any extra issues, and the residue will be removed from the fuel tank after you feel a breather line into the tank. So, you should try your best to rent out a compressor and attach a breather line to it. With that said, you can always try your luck with elevating the boat, but it is impossible to get the perfect results without the use of a breather line.

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