Home » Public Forums » GMCnet » Strategy for fuel draining ?
| Strategy for fuel draining ? [message #359118] |
Wed, 30 September 2020 19:48  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
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So it looks like i need to remove 35 gallons aged gasoline (7 years)
I can drive it up on ramps, but i can't think of any cheap low profile vessel to put under it.
Maybe access the line and let the electric fuel pump do it?
A kitty pool?
If I knew the thread size on the bung i could fashion a valve.
Other ideas ?
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Strategy for fuel draining ? [message #359120 is a reply to message #359118] |
Wed, 30 September 2020 20:11  |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
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Hook an electric fuel
Pump
To the line and pump them
Dry. That is best method.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] Strategy for fuel draining ? [message #359123 is a reply to message #359120] |
Wed, 30 September 2020 21:57 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Pumping out is good, but if it is that old, you need to replace ALL the
rubbers fromtankto engine.
You will need to drop the tanks.
As your lowering the tanks, bleed lot out of the fill of each tank.
On Wed, Sep 30, 2020 at 6:12 PM Jon Roche via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Hook an electric fuel
> Pump
> To the line and pump them
> Dry. That is best method.
> --
> Jon Roche
> 75 palm beach
> EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
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jimk@appliedairfilters.com
www.appliedgmc.com
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| Re: [GMCnet] Strategy for fuel draining ? [message #359127 is a reply to message #359123] |
Wed, 30 September 2020 22:44 |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
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jimk wrote on Wed, 30 September 2020 21:57Pumping out is good, but if it is that old, you need to replace ALL the
rubbers fromtankto engine.
You will need to drop the tanks.
As your lowering the tanks, bleed lot out of the fill of each tank.
That's not going to happen at this time. I'm in a small place and i'm moving in a couple months to a bigger place with a better shop. . For now i just want to drain the tank so i can run the coach without further contaminating the carb.
The lines were probably all new when the coach was parked, why do they need to be changed?
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
[Updated on: Wed, 30 September 2020 22:46] Report message to a moderator |
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| Re: [GMCnet] Strategy for fuel draining ? [message #359128 is a reply to message #359127] |
Wed, 30 September 2020 23:32 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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ok If the fuel is around 6-7 years old and does not smell like varnish..
Check the hose to be the new rating.
On Wed, Sep 30, 2020 at 8:45 PM dave silva via Gmclist <
gmclist@list.gmcnet.org> wrote:
> jimk wrote on Wed, 30 September 2020 21:57
>> Pumping out is good, but if it is that old, you need to replace ALL the
>> rubbers fromtankto engine.
>> You will need to drop the tanks.
>> As your lowering the tanks, bleed lot out of the fill of each tank.
>
>
> That's not going to happen at this time. I'm in a small place and i'm
> moving in a couple months t oa biger place wit ha better shop. . For now i
> just want to drain the tank so i can run the coach without further
> contaminating the carb.
>
> The lines were probably all new when the coach was parked, why do they
> need to be changed?
>
> --
> Dave & Ellen Silva
>
> 1972 Revcon Olds 455, toro drive train. All Stock
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: Strategy for fuel draining ? [message #359131 is a reply to message #359118] |
Thu, 01 October 2020 07:26 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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What JimK says. If the lines are not new barrier hose, they need to be replaced. Otherwise you stand a good chance of settin' the woods on fire, andthe coach too.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Strategy for fuel draining ? [message #359133 is a reply to message #359118] |
Thu, 01 October 2020 07:41 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Results may vary.
But draining via an electric fuel pump has seemed to empty the tanks almost completely dry. I have done that a few times, and the one time I tried to use the drain plugs seemed to leave more gas in the tank....
You can also put gas back in coach after all the known bad gas has been removed. Then hook up an electric pump up in a loop with a fuel filter cartridge. and pump gas out of tank and back into tank through a filter. Run that and change a few fuel filter cartridges out a few times and that is a good way to really flush the system and make sure you can get a good fuel feed from the tanks.
Guessing bounds did the fuel
Lines and used the barricade lines, and hopefully it was stored with tanks full and tanks are
Just dirty and not rusted.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
[Updated on: Thu, 01 October 2020 09:11] Report message to a moderator |
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| Re: [GMCnet] Strategy for fuel draining ? [message #359134 is a reply to message #359127] |
Thu, 01 October 2020 09:33 |
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Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
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hertfordnc wrote on Wed, 30 September 2020 20:44
That's not going to happen at this time. I'm in a small place and i'm moving in a couple months to a bigger place with a better shop. . For now i just want to drain the tank so i can run the coach without further contaminating the carb.
Dave,
If you're not currently using the coach much at all, and you're moving to a better shop in a couple of months where it'll be easier to work, why does it have to be drained now? You could just use a 5 gallon tank on the front bumper or in front of the passenger seat and run it that way.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
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| Re: Strategy for fuel draining ? [message #359140 is a reply to message #359118] |
Thu, 01 October 2020 16:27 |
Greg C.
Messages: 224
Registered: October 2019
Location: Knoxville, TN
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The drain plugs are 1/4" NPT. I pulled my plugs out, screwed in a shut off valve, and drained the gas into an oil drain pan. I mounted an electric fuel pump and filter-water separator on a board some distance from the coach and powered it with a battery charger. The pump pulled from the drain pan, through the filter, and into five gallon cans. Had the passenger side jacked up a little to force the gas over to the drain holes. Drained 25 gallons, got the water out of it, and then reversed the process pumping from cans into the fuel filler. Filtered everything twice. Filled up with fresh gas and the coach no longer misses.
Greg Crawford
KM4ZCR
Knoxville, TN
"Ruby Sue"
1977 Royale
Rear Bath
403 Engine
American Eagle Wheels
Early Version Alex Sirum Quad bags
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| Re: [GMCnet] Strategy for fuel draining ? [message #359145 is a reply to message #359144] |
Thu, 01 October 2020 22:24 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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Yep Ive drained my tanks twice now, I used a old holly electric pump and there was only a cup or so left.
Tip. have the coach fairly level
pump from each tank
I used a 5 gallon boat tank
Keith
________________________________
From: Gmclist on behalf of Matt Colie via Gmclist
Sent: Thursday, October 1, 2020 7:11 PM
To: gmclist@list.gmcnet.org
Cc: Matt Colie
Subject: Re: [GMCnet] Strategy for fuel draining ?
Greg,
As someone that has had is tanks down too many times, I can assure you that pumping the fuel out is the best method. I was able to get both drain
plugs loose, but it did me little good as I ended up wearing several gallons. Later I bought a cheap fuel pump and never regretted it. If, you are
going to take them down and try to handle them, pulling the drain plugs when the tank is about dry is also a good idea as the free surface in those
big flat tanks makes them a real prize to manage.
Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: Strategy for fuel draining ? [message #359148 is a reply to message #359118] |
Fri, 02 October 2020 14:33 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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If you have the time, an Autauga County Credit Card (siphon hose) will get about two thirds of it out. Then up the ramp and put a washtub under the bung to get the last of it.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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