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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / August 2007

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How to get gasoline out of gas tank???

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Dennis - 23 Aug 2007 02:02 GMT
I have to change the fuel pump in my daughters Monte Carlo. It has almost a
full tank of gas.
What is the best and safest way to get the gas out. I can't get a hose into
the tank to siphon it.
Does someone make a pump of some sort to do this? Thanks for any ideas.

Dennis B.
cuhulin@webtv.net - 23 Aug 2007 04:23 GMT
See if the fuel line from the tank runs underneath the car.If there is a
connection under there, get some containers to catch the gas, disconnect
the fuel line and you can drain the tank.
cuhulin
2001jettavr6 - 23 Aug 2007 05:00 GMT
check walmart they make small siphoners that should fit in there

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cuhulin@webtv.net - 23 Aug 2007 17:41 GMT
Or maybe a small diameter flexible hose.
cuhulin
'97ventureowner - 23 Aug 2007 19:33 GMT
cuhulin said,"See if the fuel line from the tank runs underneath the
car.If there is a
connection under there, get some containers to catch the gas,
disconnect
the fuel line and you can drain the tank."
This might be your best and only option as most car manufacturers have
placed baffles and other means to make it more difficult to siphon gas
in modern cars. Some of this is fallout from the oil crisis of the 70s
when siphoning gas from vehicles was very commonplace. I have found
that, that method works quite well.

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ray - 24 Aug 2007 01:59 GMT
> I have to change the fuel pump in my daughters Monte Carlo. It has almost a
> full tank of gas.
[quoted text clipped - 3 lines]
>
> Dennis B.

I'm going to assume here that it's a fuel injected Monte with a tank
mounted pump instead of a carbed one with a block mounted pump.

If the fuel filter is under the car, that might provide a way to
disconnect the line and drain the tank.

My car has a fuel pressure test port under the hood - looks like a tire
valve.  My theory (untested) would be to pull the core from it, hook up
a hose, and turn the ignition on.  The fuel system will prime to bring
the pressure up, and will instead drain the tank.  Although, if the pump
is totally fubared, I guess this won't work... you'll be disconnecting
the line instead.

If you've eaten your wheaties lately, you could drop the tank with the
gas in it... figure on 7 pounds/gallon + the 25 pounds for the tank
assembly.

My $0.02... I've changed leaky gas tanks on two cars, and next time I'm
paying a shop to do it because it's a real PITA to get the tank back in.
(And I'm stubborn - I had no help yesterday but installed the motor into
my race car anyway by myself, took three times as long as it would have
normally.)

Ray
Bob M. - 24 Aug 2007 04:40 GMT
>I have to change the fuel pump in my daughters Monte Carlo. It has almost a
>full tank of gas.
> What is the best and safest way to get the gas out. I can't get a hose
> into the tank to siphon it.
> Does someone make a pump of some sort to do this? Thanks for any ideas.

Presuming it is an electric, in-tank fuel pump that is still working
somewhat, you can disconnect the fuel line at the engine (or tank) and
connect to that a short hose that drains into something.  Then, turn the
ignition to 'run' and it should run the pump for a few seconds. Repeat as
needed.
Steve Austin - 24 Aug 2007 13:00 GMT
>> I have to change the fuel pump in my daughters Monte Carlo. It has
>> almost a full tank of gas.
[quoted text clipped - 7 lines]
> ignition to 'run' and it should run the pump for a few seconds. Repeat
> as needed.

Save the wear and tear on your ignition switch.  Jumper the pump at the
relay.
news - 25 Aug 2007 04:38 GMT
>>> I have to change the fuel pump in my daughters Monte Carlo. It has
>>> almost a full tank of gas.
[quoted text clipped - 10 lines]
> Save the wear and tear on your ignition switch.  Jumper the pump at the
> relay.

Shouldn't it keep running because it fails to bring up the pressure or
is it timed?

Ray
cuhulin@webtv.net - 25 Aug 2007 05:08 GMT
Is the fuel pump inside the gas tank?
cuhulin
Dennis - 25 Aug 2007 17:57 GMT
Yes the pump is inside the tank.
What I ended up doing was disconnecting the filler tube from the tank and
inserting a small hose into the tank.
I connected the hose to an external electric fuel pump that came from a
Honda. I had to connect the pump to a battery, I used long wires so I was
far enough from the car so that a spark wouldn't catch the gas on fire.
It worked pretty good, took about an hour to drain the tank

Thanks for your suggestions.
Dennis
 
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