Drainig fuel without dropping the tank?
Drainig fuel without dropping the tank?
I have an 89 V6 Bird with a tank full of 10 year old fuel. Can I siphon it easily, and are there any tips you might suggest?
Joined: Feb 2003
Posts: 1,508
Likes: 63
From: Austin, Tx
Car: 91 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 3.73 Hawks 8.8
Re: Drainig fuel without dropping the tank?
12v electric fuel transfer pump kit. There are a lot of options on Amazon for them. You could also get the hand pump style and some hose.
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Joined: Aug 2002
Posts: 1,171
Likes: 42
From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: Drainig fuel without dropping the tank?
I used a harbor freight manual fuel pump. I couldn’t get the last few gallons out. The baffles make it quite difficult.
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Joined: Sep 1999
Posts: 3,016
Likes: 818
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Drainig fuel without dropping the tank?
I used a hand-pump and pulled the fuel from the fuel line connection at the tank...
Re: Drainig fuel without dropping the tank?
I bought a $10 12v pump off AMZ and will try pulling from the fuel line connection at the tank. Thanks for the great replies.
Re: Drainig fuel without dropping the tank?
My 12v pump was able to suck maybe two gallons from the filler neck. I wasn't able to get any fuel to flow through the old fuel filter. I used a hose barb attached to the filter and got nothing out that way. I'm still working on it.
Joined: Mar 2001
Posts: 10,421
Likes: 2,083
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Drainig fuel without dropping the tank?
Detach the hose somewhere in the back and drain into gas cans. Jump the fuel pump relay to pump out fuel. Do it outdoors and don't be under the vehicle or anywhere near that gas can when you turn on the pump. Don't need to become burn victim.
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Joined: Sep 1999
Posts: 3,016
Likes: 818
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Drainig fuel without dropping the tank?
Yeah, you don't suck it out from the filler neck. You suck it out from the fuel line connection underneath the car...
Joined: Oct 2001
Posts: 12,221
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Drainig fuel without dropping the tank?
If the factory fuelpump works, you can unhook the fuel filter, put rubber line on pipe into gas can and jump the relay to kick on the pump
Re: Drainig fuel without dropping the tank?
It looks like we are dropping the tank on Tuesday.
Joined: Feb 2003
Posts: 1,508
Likes: 63
From: Austin, Tx
Car: 91 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 3.73 Hawks 8.8
Re: Drainig fuel without dropping the tank?
You do if you have a dead pump. The metal lines coming off the top of the tank are not easy to get a pump on unless you cut them. and then you are now pulling through a motor and a possibly full of junk filter sock.
You can do it from the filler neck pretty easily. Not 100% comes out, but it sure makes it lighter when you are pulling it out from the car above your head
You can do it from the filler neck pretty easily. Not 100% comes out, but it sure makes it lighter when you are pulling it out from the car above your head
Senior Member




Joined: Jul 2016
Posts: 789
Likes: 208
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: Drainig fuel without dropping the tank?
I finally dropped the tank today and it was a complete mess. I'm replacing the tank and fuel pump assembly entirely. Pics to follow. Thanks for all the replies.
Joined: Oct 2020
Posts: 1,403
Likes: 666
From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Drainig fuel without dropping the tank?
Delphi still makes the complete fuel pump module assembly for fuel injected V6 3rd gen F-body cars. They don't make one anymore for V8 or carbureted cars
DELPHI HP10266 | Fuel Pump Module Assembly| 1985 to 1989 2.8L V6 & 1990 to 1992 3.1L V6 | F-body Camaro & Firebird | Rock Auto
These are on Wholesaler Closeout for $73.79.
DELPHI HP10266 | Fuel Pump Module Assembly| 1985 to 1989 2.8L V6 & 1990 to 1992 3.1L V6 | F-body Camaro & Firebird | Rock Auto
These are on Wholesaler Closeout for $73.79.
Joined: Dec 2004
Posts: 16,772
Likes: 1,002
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Drainig fuel without dropping the tank?
New regulator and injectors will be needed. Contact @southbay08
Re: Drainig fuel without dropping the tank?
Hey...we have the regulator and any injectors you need. You can go to our website under the tpi category or just give us a call at the shop. We'll be more than happy to help you.
you will also receive 10% off for being a
thirdgen member. Promo code is tg11
you will also receive 10% off for being a
thirdgen member. Promo code is tg11
Joined: Dec 2004
Posts: 16,772
Likes: 1,002
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Joined: Oct 2020
Posts: 1,403
Likes: 666
From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Drainig fuel without dropping the tank?
Did you end up getting that Delphi fuel pump module assembly I linked from Rock Auto?
Joined: Oct 2020
Posts: 1,403
Likes: 666
From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Drainig fuel without dropping the tank?
Did it seem like a quality sending unit and hanger assembly? Is the pump quiet?
Re: Drainig fuel without dropping the tank?
The pump is silent. The fit was almost exact, an extra inch or two of rubber line was all that was needed. I had no other issues.
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