What is the easiest way of getting old fuel out of tank? - TCCoA Forums
 
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post #1 of 26 (permalink) Old 04-04-2011, 02:49 PM Thread Starter
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What is the easiest way of getting old fuel out of tank?

I have a 1992 Thunderbird that has been in the garage for 8 years while slowly putting the top end of the engine back together because of the busted hose that runs from the water pump to the firewall for the heater. I had the injectors serviced for a good chunk of money and don't want that going to waste by sending old gas through them. I've tried to siphon out any gas with no luck (is there a stainer in there?) I'm also a little worried about the fuel gauge, we think there was a half tank when it was parked and the gauge also said that when the battery was hooked up then I got under the car a banged on the tank to see if I could hear gas slosh around then the gauge read full tank? It's a guessing game to if there is any in there and don't want to burn up the pump by hitting the key a million times with none in there. Some did come out the few times we did hit the key and seemed to be a little less than the first time we hit it. Could it have evaporated after 8 years in a closed system and the float stuck at half tank? I just don't want to burn up the pump. Thanks for reading my wonderful story. Skidder.
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post #2 of 26 (permalink) Old 04-04-2011, 02:58 PM
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Drop the tank down a few inches with the filler hose removed (tank side). Siphon from the hole.

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post #3 of 26 (permalink) Old 04-04-2011, 03:26 PM
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That's easy, disconnect the fuel filter and jump the connector on the EEC-IV tester.

Sooooooooooo much easier this way.

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post #4 of 26 (permalink) Old 04-04-2011, 03:34 PM
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Drill a hole in the bottom of the tank....

Well you asked for the "easiest way".... not the best way.

Seriously though, what 90Coug said or something similiar. After the tank is drained, I would probably drop the tank (yes a PITA), and replace the fuel pump (unless it is relatively new). If it is the original pump, it is probably due anyway.

But just my .02 and welcome to TCCoA.

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post #5 of 26 (permalink) Old 04-04-2011, 03:36 PM
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If its been sitting for 8 years and you question the fuel sending unit, just drop the tank after its been drained.

If you don't feel like replacing the pump and just want cruddy fuel out of your tank, don't run it through a fuel pump and sock you intend to continue to use.

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post #6 of 26 (permalink) Old 04-04-2011, 04:27 PM
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also instead of tryin to siphon with your mouth, if you have a shop vac you can put your hose in the tank and then run that hose to the shop vac hose... the shop vac hose will most likely be bigger so when you turn the shop vac on put your hand over the shop vac hose so that all of the suction goes to the hose leading to the fuel tank.... sorry if that's hard to follow lol.
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post #7 of 26 (permalink) Old 04-05-2011, 01:50 AM Thread Starter
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From Coug90 "jump the connector on the EEC-IV tester." Where is the tester located and how exactly should I jump it without frying anything. I also heard jumping the fuel pump relay and I'm not sure where that is either or how to go about jumping it. Thanks for the help everyone.
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post #8 of 26 (permalink) Old 04-05-2011, 03:00 AM
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using an electric vacuum cleaner to pull gasoline sounds really smart to me !?

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post #9 of 26 (permalink) Old 04-05-2011, 03:25 AM
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Originally Posted by Sturg View Post
also instead of tryin to siphon with your mouth, if you have a shop vac you can put your hose in the tank and then run that hose to the shop vac hose... the shop vac hose will most likely be bigger so when you turn the shop vac on put your hand over the shop vac hose so that all of the suction goes to the hose leading to the fuel tank.... sorry if that's hard to follow lol.
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using an electric vacuum cleaner to pull gasoline sounds really smart to me !?
I'd have to agree.

There's no way I'd put any electrical device near gasoline. That's a formula for disaster.

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post #10 of 26 (permalink) Old 04-05-2011, 06:51 AM
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Originally Posted by Trunk Monkey View Post
I'd have to agree.

There's no way I'd put any electrical device near gasoline. That's a formula for disaster.
Huh.

So, how does your car get its gas out of the tank while it's running?

Besides that nice electric motor in the fuel pump ... mounted in the gas tank, using the gasoline to help keep it from overheating?

RwP
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post #11 of 26 (permalink) Old 04-05-2011, 06:58 AM
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Quote:
Originally Posted by Trunk Monkey View Post
I'd have to agree.

There's no way I'd put any electrical device near gasoline. That's a formula for disaster.
x100!!!

Every shop vac I've ever used had nice sparks around the motor when it starts up. Not something I would want to have around gasoline!!!!

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Originally Posted by RalphP View Post
Huh.

So, how does your car get its gas out of the tank while it's running?

Besides that nice electric motor in the fuel pump ... mounted in the gas tank, using the gasoline to help keep it from overheating?

RwP
The pump in a fuel tank is different and SEALED, whereas the one in the shop vacuum is not.

Every shop vacuum I've seen also states not to be used to pick up flammable items.

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post #12 of 26 (permalink) Old 04-05-2011, 11:03 AM
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Originally Posted by skidder View Post
From Coug90 "jump the connector on the EEC-IV tester." Where is the tester located and how exactly should I jump it without frying anything. I also heard jumping the fuel pump relay and I'm not sure where that is either or how to go about jumping it. Thanks for the help everyone.
Run a ground wire from 926 in the diagram to the ground on your battery, or somewhere on your car. You'll need to turn the key to accessory if memory serves me correct. Before you do this undo your fuel filter and use a gas tank or pan to collect the gas.

On my supercoupes the test connector is located by the passenger side firewall or by the air intake box for my later model.




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post #13 of 26 (permalink) Old 04-05-2011, 11:00 PM Thread Starter
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Thanks 90coug

I'm away from the car this week but I will try it this weekend and let everyone know how it went or if it went at all. Thanks, this is very helpful.
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post #14 of 26 (permalink) Old 04-05-2011, 11:49 PM
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Welp it worked for me lol... might not have been the smartest but I've never seen our shop vac spark...

note: do what i said at your own risk lol.

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post #15 of 26 (permalink) Old 04-06-2011, 07:52 AM
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Well now Im getting ideas. If I grounded the negative battery cable and hooked up a battery could I power up the fuel pump if I have no motor or trans without hurting or frying anything?

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post #16 of 26 (permalink) Old 04-07-2011, 06:02 PM
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Anyone?

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post #17 of 26 (permalink) Old 04-07-2011, 08:25 PM
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A long as you are sure that nothing is shorted anywhere before you hook up a battery. You're basically "hot-wiring" the fuel pump. Let 'er rip!

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post #18 of 26 (permalink) Old 04-07-2011, 08:44 PM
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Im not though. Everything looks good and Ive checked and crawled and cleaned but I dont about electronics condithion. I havent seen anything work yet the motors going in this weekend

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post #19 of 26 (permalink) Old 04-08-2011, 09:51 PM
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Originally Posted by 94 Daily Driven 4.6L View Post
Drill a hole in the bottom of the tank....

Well you asked for the "easiest way".... not the best way.
I completely disagree.

The best way, and easiest, In my personal experience is: FIRE!

Gets that stuff right out of there. Easy, too.

One match, a rag, stuff the old lady in the trunk... Well, your mileage may vary on that one...

(lol)

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post #20 of 26 (permalink) Old 04-09-2011, 09:59 AM
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I completely disagree.

The best way, and easiest, In my personal experience is: FIRE!

Gets that stuff right out of there. Easy, too.

One match, a rag, stuff the old lady in the trunk... Well, your mileage may vary on that one...

(lol)
How is that easy? Have you ever tried to make a lady do ANYTHING? I'm just saying...

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post #21 of 26 (permalink) Old 04-09-2011, 12:56 PM
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Originally Posted by Grog6 View Post
I completely disagree.

The best way, and easiest, In my personal experience is: FIRE!

Gets that stuff right out of there. Easy, too.

One match, a rag, stuff the old lady in the trunk... Well, your mileage may vary on that one...

(lol)
Why would I wanna ruin a perfectly good car by putting my ol lady in the trunk?
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post #22 of 26 (permalink) Old 04-10-2011, 07:14 PM
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Why would I wanna ruin a perfectly good car by putting my ol lady in the trunk?
Hey, they say everything's better on fire, right? And it takes cooties right out.


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post #23 of 26 (permalink) Old 04-11-2011, 07:08 AM
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I have had to hotwire pumps before for people who filled their gasoline car up with diesel across the street. Also, do not leave this unattended. If the pump continues to run dry, it will fail.

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post #24 of 26 (permalink) Old 04-11-2011, 07:28 AM
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Well I have no motor or trans, so we will see today. I will be right there

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post #25 of 26 (permalink) Old 04-15-2011, 06:07 PM
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From personal experience I say just drop the tank and get the fuel out that way and replace the pump while you are at it.
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post #26 of 26 (permalink) Old 04-16-2011, 04:39 PM
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drop tank pull pump replace sock (hell pump why not) get tank to stand on side clean out with alcohol (buy bulk at paint store) put all together hit key a few times change filter start it up. Good luck

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