How to Drain a Gas Tank in a F250 Diesel Truck

Written by zyon silket
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How to Drain a Gas Tank in a F250 Diesel Truck
(Hemera Technologies/ Images)

If you need to remove the fuel tank on a Ford F-250 diesel truck due to a bad fuel pump, you need to remove at least three-quarters of the diesel from the fuel tank to make the tank manageable to handle. Otherwise, the fuel in the tank makes the tank too heavy. With the use of a good siphon kit, you can quickly remove the diesel from the fuel tank.

Skill level:
Moderately Easy

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Things you need

  • Gas tank siphon kits
  • Gas can

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  1. 1

    Open the fuel door, and remove the gas cap from the fuel tank filler tube on the Ford F-350.

  2. 2

    Slide the long, flexible hose connected to the siphon kit into the filler tube as far as it can go. The more of the hose you shove into the tank, the more diesel you can remove from the tank.

  3. 3

    Place the hard, plastic tube, located on the other end of the siphon kit, into a gas can labelled for diesel.

  4. 4

    Squeeze the ball valve on the siphon kit to create the necessary vacuum to suck the diesel out of the tank.

  5. 5

    Remove the hose from the gas can and fuel tank once you siphon the diesel out of the Ford.

  6. 6

    Thread the gas cap back onto the filler tube, and close the fuel door.

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