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HELP!!! How to remove gas from tank? Hurricane Sandy coming tonight!!!

Discussion in 'Gen 2 Prius Main Forum' started by Beachbum, Oct 28, 2012.

  1. Beachbum

    Beachbum Junior Member

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    Post-hurricane followup:

    Thanks everyone for all the posts. So here is what I did:

    First, as stated in my original post, you CANNOT siphon gas from a Prius no matter what size hose you use. There is something in the filler neck that prevents the siphon hose from reaching the tank. Probably some sort of wire mesh screen or something installed as an anti-theft device. In fact most all cars today have this anti-theft device. Try it sometime, you will see.

    But I did fill up our 3 cars before the storm hit. And was able to pump gas out of my Honda Odyssey's 22 gal fuel tank using the electric fuel pump. Luckily there was a quick-connect coupling under the hood for the fuel line, before the fuel rail and very easy to get to. I didn't even need a wrench or have to release the pressure. Just squeezed 2 tabs and it popped right off. Connected an appropriate sized rubber hose to it and ran it to my gas can. Turned the key on to activate the fuel pump and pumped away.

    So I had plenty of gas to keep my generator humming (and the wife and kids happy) for the 4 days we lost power. And didn't have to wait in 3-hour long lines to fill up my gas can!

    So the moral of this story is...it's just too difficult to pump gas out of a Prius. But if you're ever in a crisis situation, as I was, try doing it as described above with some other car.

    Good luck. And let's hope we never have another hurricane like Sandy. It literally destroyed the Jersey shore and did extensive damage throughout the state.
    *********************************************

    Hope someone can help me quick. Hurricane Sandy will be a direct hit on NJ tonight. Got my generator ready but only have one gas can and will need to refill it if we lose power. Got plenty of gas in my '07 Prius but how do I get it out? I tried siphoning but there is something in the filler neck that blocks the hose from reaching the tank!

    So I'm hoping I could open a fuel line under the hood somewhere, hook a hose up to it, and run the fuel pump to pump it out. But how? A few questions:

    * What fuel line, where is it located? Hopefully somewhat accessible.
    * How do I release fuel pressure first? Is there a shraeder valve to release the pressure? Where is it? If I remove the schraeder valve can I remove the gas from that port?
    * Will the fuel pump run continuously with Ignition On? Or would I need to jump the fuel pump relay to have it run continuously? Where is it located? What terminals to jump?

    Any help greatly appreciated. A picture would be great!
     
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    It would be much easier for you to purchase additional gas cans and fill them with gas; than to try to get fuel out of the Prius fuel line - so I suggest you do the former.

    You would have to jump the circuit opening relay to get the fuel pump to continuously run and that will not be easy since that relay is integrated into a block of four relays within the main relay/fuse box near the inverter, marked Unit C. As your msg pointed out, you would also have to figure out how to attach a suitable fitting to the fuel line, release the pressure, etc.
     
  3. Beachbum

    Beachbum Junior Member

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    Thanks Patrick but unfortunately I haven't been able to find a gas can anywhere for the last 3 days...sold out! That's why I was hoping to get some out of the Prius which is full. Was hoping it would be easy to do...I did it once on one of my old cars and it was a piece of cake. Just released the pressure from the schraeder valve, hooked up a hose to a port on the fuel rail, jumped the fuel pump relay, and pumped away. But sounds like the Prius is not so easy.

    If anyone else has any ideas on this I'd sure like to hear them. Thanks!
     
  4. goddess prii

    goddess prii Member

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    Have you tried calling toyota care? I know it's a shot in the dark. Take care.
     
  5. Dan45

    Dan45 Beyond Oil

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    Hello Patrick:

    If you had a 12 volt inverter you could plug it into the DC 12 volt output of the Prius and when the 12 volt battery got low it would take power from the large battery with the DC to DC converter. When the large battery got too low it would run the motor for a few minutes to charge up the large battery. Then it would shut itself off. You can get electricity out of the Prius for a long time depending on how full the gas tank is.
     
  6. ProximalSuns

    ProximalSuns Senior Member

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    There is usually a drain plug on the bottom of every auto gas tank.
     
  7. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Classic and 2G Prius have a flexible bladder within the fuel tank. Therefore, you will not find a drain plug.

    I've posted a photo that shows what the Classic fuel rail looks like after the air cleaner housing and the valve cover has been removed. See the black assembly immediately above the intake manifold.

    I don't see any valve, Schrader or otherwise. Hence it looks like the fuel rail itself would have to be removed from the fuel injectors for access to the fuel line.

    Alternatively, the OP could remove the hatch floor trim and rear seat, remove the cover which provides access to the fuel tank, then disconnect the hose that leads from the fuel tank to the engine.

    The OP would have to be very desperate to remove all of those components for access to the fuel line. If he anticipates that he will reach that level of desperation, I suggest that he download relevant electrical wiring diagram pages for his model year at techinfo.toyota.com so that he can find Unit C within the main relay/fuse box, figure out where the circuit opening relay is, and plan how to short the switched terminals to power the fuel pump.

    An alternate approach would be to remove the fuel pump connector via the access provided at the rear seat, and provide 12VDC directly to the fuel pump. It would help for the OP to have access to the repair manual pages at techinfo so that he can follow the procedure listed there.

    It is a good idea to use a 12V inverter with the Prius, however the most AC power you can expect to produce via that process is around 1 kW.
     

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  8. 13Plug

    13Plug Active Member

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    I've never seen a drain plug on a gas tank, care to share some examples with pics?
     
  9. Joe 26

    Joe 26 Member

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    Not common, but I have seen them. Mostly foreign cars, mid 90's?
     
  10. dbcassidy

    dbcassidy Toyota Hybrid Nation, 8 Million Strong

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    Nope,

    Unless you want to do the old tried and true method - ice pick and hammer. As mentioned above the Prius has a fuel bladder, so no drain valve.

    DBCassidy
     
  11. dbcassidy

    dbcassidy Toyota Hybrid Nation, 8 Million Strong

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  12. PriusCamper

    PriusCamper Senior Member

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    You're better off just heading for a shelter if you run out of your first gallon of gas because if things go wrong while you're trying to get gas out of a ridiculously complex fuel storage system there's not going to be any emergency services to help you for a while. Just ration your tank of gas until you run out and keep your car functional/untampered with... And be glad you don't have to worry about anyone ever stealing your gas, which is yet another great Prius feature that I didn't know about.... ;-)
     
  13. wjtracy

    wjtracy Senior Member

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    How many gallons are you trying to get out (how much does your gas can hold)?
    Hillsborough, Hillsborough...near Princeton? I was from deeper South Jersey.
    Safety first. I would think if you drove into PA you could find a gas can.
    Do you have any substitute can such as a 5-gal kerosine can?
    Not safe for gasoline, but what I use for used lube oil are the HDPE bottles from the windshield washer solution. Those are fairly strong HDPE bottles (#2 plastic).
    All of these activities have safety issues be sure to follow instructions to prevent static, such as keep container on the ground and so on.

    Keeping your gas tank full is high safety priority anyways.
    Your first plan should probably be shuttle trips to the gasoline station to fill-up can.
     
  14. massparanoia

    massparanoia Active Member

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    Cut a section of garden hose without the metal couplings on each end, about 5 feet long or so. Insert into gas tank and suck. Stop when the sweet taste of gasoline hits your lips and proceed to fill containers with gasoline at will.

    Or you could go to the nearest auto parts store and get a manual siphon pump. They have a squeeze bulb inline that replaces your lungs and work well too.

    Either way good luck and stay dry!
     
  15. PriusCamper

    PriusCamper Senior Member

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    the original poster tried that and it didn't work. Maybe they didn't suck hard enough? More to point accidentally getting gasoline in your mouth can give you a chemical nemonia, in some cases, like during a hurricane when medical facilities may be unavailable it could exacerbate other dangers / untimely demise...
     
  16. ProximalSuns

    ProximalSuns Senior Member

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    Ah. I wonder if there is still some drain facility built into the the bladder as there is in regular fuel tanks in case of need for draining the tank.
     
  17. edthefox5

    edthefox5 Senior Member

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    Not sure if there's an anti siphoning spring in the fuel neck. There is an anti diesel pump blocker though. Thats that plate with the hole you see down in the pipe that prevents a diesel gas pump from being inserted If thats whats restricting you it does seem to come right out. few posters have complained of it coming out. Pull it out if you need too. It wont harm anything but you will be able to fit a diesel pump in it though.
     
  18. edthefox5

    edthefox5 Senior Member

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    Never seen a fuel drain on a car gas tank. Safety issue I assume. Sure would be handy though.
     
  19. wjtracy

    wjtracy Senior Member

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    the technical drawing shows a carbon cannister valve in the line, also several 90 degree bends.
    I am sure there are past threads on how to do this, but not sure OP should do it anyways.
     
  20. edthefox5

    edthefox5 Senior Member

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    No the poster should preserve Prius gas and RUN! It will be days without power and water so he should have had at least 50 gallons stockpiled anyway. But they have cold too. Without gen no heat unless fireplace. Down here never have to worry about being freezing after a hurricane.
    I keep ten 5 gallon cans. Half for car gas the other 5 for water to flush the toilet.