Removing old gas

Discussion in '2005+ Mustang GT 4.6L Tech' started by Zach Baumann, Jan 24, 2023 at 12:55 PM.

  1. Zach Baumann

    Zach Baumann Junior Member

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    I’m rebuilding my engine and with part delays and back orders it’s taking longer than expected. That being said i wanna removed the gas from the tank and when ready just fill it with new gas. Can I siphon it out like older cars or do these 3v’s have anti theft stuff?
     
  2. Dino Dino Bambino

    Dino Dino Bambino I have a red car

    Age:
    59
    3,520
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    Easy.

    1. Remove the rear seat bottom.
    2. Remove the fuel pump/sending unit assembly.
    3. Siphon the fuel out.
     
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  3. Midlife Crises

    Midlife Crises Senior Member

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    Or you can remove the rear seat bottom. Disconnect the fuel line from the top of the fuel hat and slip a few feet of 5/16” fuel line over the nipple sticking out of the fuel tank. Put the other end of the fuel line in a gas can. Open the trunk and disconnect the plug from the fuel pump drive module. Apply 12 Volts to the black and red wires in the plug and the pump will run. I’ve done this several times. Just don’t run the pump dry.
     
    Zach Baumann likes this.
  4. Zach Baumann

    Zach Baumann Junior Member

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    Didn’t even think of going in that way. Thanks guys
     
  5. Juice

    Juice forum member

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    Unless your rebuild will take more than a year, I would not worry about it. I would consider draining gas after two years (and burn it in lawn equipment)
     
  6. Laga

    Laga Senior Member

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    The last time I put my gas in my fathers 1993 Fleetwood was almost exactly 2 years ago. We drove it last week to take him to the doctor and it started and ran just fine. Once it warms up, I’ll jump the fuel pump relay to pump out the old gas and refill.
     
  7. JC SSP

    JC SSP Member

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    For a few months your OK, 3-6 Consider adding fuel stabilizer, anything close to year then follow Midlife and Dinos advice and use it in your lawn mower...
     
  8. Cum Grano Salis

    Cum Grano Salis Member

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    2A83F122-DB0F-4F33-B36F-2AB6335E5C89.jpeg True, have used Sta-Bil for decades, never a problem with fuel even after 2 or so years. Something about retaining the molecular structure of gas. Prior have had gas turn to like shellac and gummy residue.
     
    Last edited: Jan 24, 2023 at 5:58 PM
    JC SSP likes this.
  9. Zach Baumann

    Zach Baumann Junior Member

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    Yeah it’ll be a while with life stuff also slowing the build down. Guess the mower will be getting 93 octane gas. Gonna be super fast at mowing now
     
    Last edited: Jan 24, 2023 at 8:16 PM
    bambam 06 and JC SSP like this.
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