How to drain gas

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Old 09-22-07, 05:40 PM
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How to drain gas

I have a leaky tank, which I didn't know about until I refilled my gas tank. Now I'm leaking gas and need a way to drain the tank. I can't get a hose down it to siphon it out, must have an anti-siphon device in there. So I thought disconnect the gas line and turn on the ignition, well it only runs for a second then kicks off.

So anyway ideas in how to keep the pump running or get the gas drained out? It's leaking quite a bit so any quick answers would be appreciated.

Chevy K1500 pickup truck.

Thanks
Rob
 
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Old 09-22-07, 06:47 PM
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year model might help but you can jumper the fuel pump relay and the pump should stay on and alot of models had a test pigtail near the relay that would also allow you to jumper power to the pump would just look under the hood for the realy may be on the passenger side firewall under a plastic cover, or in a relay box on newer models.
 
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Old 09-22-07, 06:49 PM
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Thanks for the quick reply, and sorry its a '97.

I found the relay earlier in my search, but wasn't sure how to jumper it.
 
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Old 09-22-07, 07:07 PM
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alot of relays have diagrams on them you might look and it should help you determine which pins to jumper but it requires knowing the basics of how a relay operates to begin with if you have no idea you may be better off having somone else do it.
 
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Old 09-22-07, 07:27 PM
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Again, thanks for the help.

The leak is near the bottom of the tank, so I would like to get as much of the gas out into some clean gas cans, rather then let it drain into some buckets.

I do have somewhat of an idea of how relays work, I uploaded the diagram from the side of the relay. Just want to get conformation before I start sticking wires in. I believe I need to jump 87 and 30, right?

http://s143.photobucket.com/albums/r...rent=relay.jpg
 
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Old 09-22-07, 08:17 PM
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yes 30 to 87 should work


97 also would have a single wire connector under hood that u could jump to power but i cant remeber the location of it right now
 
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Old 09-22-07, 08:21 PM
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If you can't find a way to drain it, you can drop the tank with a piece of plywood and a floor jack.

The tank is just held on my 2-3 metal straps with bolts on one side.
 
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Old 09-22-07, 09:27 PM
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Thanks for all the help, 87 and 30 worked and got all 20+ gallons of gas drained out. Thats what I get for filling up.

I'm going to take it get fixed, since I have the tank out should I replace the pump too? I had one put in 7 years and 100,000 miles ago. I need to replace the sending unit too, doesn't always read as it should, which led to this whole problem.

And what should/can I do with the 2 gallons that I collected in buckets that leaked from the tank. It has grit and stuff that settled to the bottom.
 
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Old 09-22-07, 11:03 PM
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years ago when i was new worked at a gas station that the pumps sucked water i asked the question what to do with the few gallons of gas water mix

lol his answer to me was i heard if u dump some out it will evaporate was his way of telling me what to do with it but covering his butt from the state

it will be hard to get rid of unless maybe a shop will take it and put it in there waste oil tank

as for the pump i would replace it and also the pulsator if u have it some do some dont it will be metal black plastic connecting the pump and the sender
 
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