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  1. #1
    Join Date
    Mar 2012
    Location
    Clermont, Fl (The wakeboarding capital of the world)
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    79

    Default emptying gas tank?

    How do you guys get all the gas out of the tank?

    Tried a syphon hose, but it gets blocked when going down thru the gas filler tube.

    Boat is running a little rough, thinking it is bad gas and want it out of there.

    e
    Ed G
    2009 Outback V

  2. #2
    Join Date
    May 2006
    Location
    Nashville
    Posts
    2,127

    Default

    Siphon is the way I always do it. I just did it last weekend on my boat to measure dry height in the water.

    It took me about 5 minutes to get that sucker to line up and feed into it, just takes some tries. Look at how your fuel hose enters the tank. Try to bend the siphon hose to contour that shape.

  3. #3
    Join Date
    Mar 2012
    Location
    Clermont, Fl (The wakeboarding capital of the world)
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    79

    Default

    Quote Originally Posted by haugy View Post
    Siphon is the way I always do it. I just did it last weekend on my boat to measure dry height in the water.

    It took me about 5 minutes to get that sucker to line up and feed into it, just takes some tries. Look at how your fuel hose enters the tank. Try to bend the siphon hose to contour that shape.
    Thanks!

    The hose I was trying to use is ~ 1/2" in diameter. Was the one you used thinner?

    yes, we are comparing the size of our hoses
    Ed G
    2009 Outback V

  4. #4
    Join Date
    May 2006
    Location
    Nashville
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    2,127

    Default

    My hose is black so it gets in anywhere....................................

    I'd say mine is about the same diameter. If you can see down into your tank from the fuel filler port you may be able to sight guide it in. I was about to try a coat hanger to send down with it to try and move it around if I couldn't get it to work.

    If all else fails, if you can see your tank(I had my rear hatch storage bin out) you can remove the filler hose from the tank and put the siphon in that way. But I have no idea if you can do that on your Moomba. Mine is WAY older.

  5. #5
    Join Date
    Apr 2002
    Location
    Austin
    Posts
    2,164

    Default

    great timing, just pulled my tank for this very reason. want it completely drained to start over with 100% fresh.

    sub floor? you'll need to pump it out or have your receptacle below the tank level. i've read about people buying 12v gas pumps designed for this but our tanks aren't too hard to pull so that's what i did.

    maybe pull the fuel line before the pump. how many gallons?

  6. #6
    Join Date
    May 2006
    Location
    Nashville
    Posts
    2,127

    Default

    Quote Originally Posted by Salty87 View Post
    maybe pull the fuel line before the pump. how many gallons?
    That's actually a great idea. If the pump is gravity fed you can run the hose out the center keel drain and into a receptacle.

  7. #7
    Join Date
    Sep 2004
    Location
    Hudson, WI
    Posts
    2,651

    Default

    Good luck getting the filler hose off -- I had to sawzall mine off.

    You'd be better off pulling out the fuel level sender. This gets you a plenty big hole to siphon out of.
    Former owner of a 1987 Supra Saltare. Current owner of a Malibu 23LSV.

  8. #8
    Join Date
    Apr 2002
    Location
    Austin
    Posts
    2,164

    Default

    Quote Originally Posted by wotan2525 View Post
    Good luck getting the filler hose off -- I had to sawzall mine off.
    if you lift the other end of the tank until it's setting on the topcap the hose almost takes itself off. obviously helps to have as little gas in it as possible. i had about 6 gallons and none spilled.

  9. #9
    Join Date
    Mar 2012
    Location
    Clermont, Fl (The wakeboarding capital of the world)
    Posts
    79

    Default

    I ended up buying a manual syphon pump from Home Depot for $11.95. That did the trick.

    I removed the filler hose from the gas tank - (very easy to do. 2 clamps and a little twisting) and put the hose directly into the gas tank.

    Drained 10 gallons out of the tank.
    Ed G
    2009 Outback V

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