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[GMCnet] Fuel Problem [message #349356] Wed, 16 October 2019 18:49 Go to next message
amansfield1104 is currently offline  amansfield1104   United States
Messages: 80
Registered: August 2009
Karma: 0
Member
On my ay back from Mansfield Ohio I had a problem I can not explain. I had installed an electric fuel pump to operate when I switch to the back up tank. It worked for a while when needed and I used it to get fuel pressure before I started the engine. I lost the mechanical fuel pump on the way back. I switched to the electric fuel pump and no pressure. I assume the valve to switch tanks quit.

I turned one the electric fuel pump and gas came out of the carbon canister. I dead headed the line going to the canister as it leagued gas. So why would gas from the fuel pump that was dead headed if the valve to switch tanks did not work. How did it pump gas out of the carbon canister?

I will switch to two electric fuel pumps with check valves if front of the electric fuel pumps. The fuel pumps will not be in the tanks. The fuel pumps will be mounted just before where the valve to switch the tanks is located.

I’ll remove the mechanical pump.

I’d like to know why the canister dumped gas? Could I have something wrong? Could a dead headed electric pump pressurize the tanks? I did not think that could happen.

To get gas to prime the engine the electric pumps was used to get gas into a bottle so I know the pump worked.
I checked the electric pump after getting homeland it is not producing any fuel pressure.

This makes the third mechanical pump I’ve replaced in about 30,000 miles. The pump installed were what I could find close to where it quit. Not the best pumps.

Thanks

Art
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Re: [GMCnet] Fuel Problem [message #349358 is a reply to message #349356] Wed, 16 October 2019 19:56 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
You have to have a hose connected incorrectly. If I remember correctly the 2 vent lines that go to the separater valve in the left fender rear well come off of the top of the tanks atre teed together and should not be able to get liquid into them unless the tanks are filled to the very tippy top or the vehicle is facing down or up hill.

Also that fuel separator is mounted high and is suppose to shutoff if liquid gets to it.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Fuel Problem [message #349360 is a reply to message #349358] Wed, 16 October 2019 20:19 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
If you have raw gas draining from your charcoal canister, your fuel
vapor/liquid separator in the drivers side wheel is faulty. Or, as Ken said
you have grossly overfilled your fuel tanks.
Jim Hupy
Salem, Oregon

On Wed, Oct 16, 2019, 5:57 PM Ken Burton via Gmclist <
gmclist@list.gmcnet.org> wrote:

> You have to have a hose connected incorrectly. If I remember correctly
> the 2 vent lines that go to the separater valve in the left fender rear well
> come off of the top of the tanks atre teed together and should not be able
> to get liquid into them unless the tanks are filled to the very tippy top
> or the vehicle is facing down or up hill.
>
> Also that fuel separator is mounted high and is suppose to shutoff if
> liquid gets to it.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Re: [GMCnet] Fuel Problem [message #349362 is a reply to message #349360] Wed, 16 October 2019 20:23 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
One must double check these things befor e going on the road. We know about
that as we have done things wrong here and had to redo.

On Wed, Oct 16, 2019 at 6:17 PM James Hupy via Gmclist <
gmclist@list.gmcnet.org> wrote:

> If you have raw gas draining from your charcoal canister, your fuel
> vapor/liquid separator in the drivers side wheel is faulty. Or, as Ken said
> you have grossly overfilled your fuel tanks.
> Jim Hupy
> Salem, Oregon
>
> On Wed, Oct 16, 2019, 5:57 PM Ken Burton via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> You have to have a hose connected incorrectly. If I remember correctly
>> the 2 vent lines that go to the separater valve in the left fender rear
> well
>> come off of the top of the tanks atre teed together and should not be
> able
>> to get liquid into them unless the tanks are filled to the very tippy top
>> or the vehicle is facing down or up hill.
>>
>> Also that fuel separator is mounted high and is suppose to shutoff if
>> liquid gets to it.
>> --
>> Ken Burton - N9KB
>> 76 Palm Beach
>> Hebron, Indiana
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
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>


--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Fuel Problem [message #349364 is a reply to message #349362] Wed, 16 October 2019 21:24 Go to previous messageGo to next message
amansfield1104 is currently offline  amansfield1104   United States
Messages: 80
Registered: August 2009
Karma: 0
Member
Thanks all’

My tank was not full when the fuel pump pushed gas put of the canister. If the electric pump was not on no gas came out of the canister. The electric fuel pump was pushing gas out of the canister. The fuel pump had worked and would provide fuel pressure before it stopped putting pressure.

Where can I get a complete drawing of the fuel system … including all vents.

On Oct 16, 2019, at 8:23 PM, Jim Kanomata via Gmclist wrote:
>
> One must double check these things befor e going on the road. We know about
> that as we have done things wrong here and had to redo.
>
> On Wed, Oct 16, 2019 at 6:17 PM James Hupy via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> If you have raw gas draining from your charcoal canister, your fuel
>> vapor/liquid separator in the drivers side wheel is faulty. Or, as Ken said
>> you have grossly overfilled your fuel tanks.
>> Jim Hupy
>> Salem, Oregon
>>
>> On Wed, Oct 16, 2019, 5:57 PM Ken Burton via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> You have to have a hose connected incorrectly. If I remember correctly
>>> the 2 vent lines that go to the separater valve in the left fender rear
>> well
>>> come off of the top of the tanks atre teed together and should not be
>> able
>>> to get liquid into them unless the tanks are filled to the very tippy top
>>> or the vehicle is facing down or up hill.
>>>
>>> Also that fuel separator is mounted high and is suppose to shutoff if
>>> liquid gets to it.
>>> --
>>> Ken Burton - N9KB
>>> 76 Palm Beach
>>> Hebron, Indiana
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


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Re: [GMCnet] Fuel Problem [message #349368 is a reply to message #349364] Wed, 16 October 2019 22:16 Go to previous messageGo to next message
Richard Denney is currently offline  Richard Denney   United States
Messages: 920
Registered: April 2010
Karma: 9
Senior Member
One possible scenario: the selector valve’s output is blocked in the Aux
position, but the valve leaves the inputs open to one another. The electric
pump fills the main tank, and overflows it into the vent tube. The
separator valve (which is just a floating ball against a donut seal) is
overwhelmed, and it pumps out through the canister.

With two electric pumps, the check valves prevent this. But you have no
check valve between the selector valve and the main tank.

I’m trying to imagine how the selector valve could plug the output and
connect the inputs, and maybe it’s not possible. But it would explain the
symptoms.

Misrouted plumbing seems likelier, though.

Rick “the electric pumps are supposed to have a check valve of sorts” Denney

On Wed, Oct 16, 2019 at 10:25 PM amansfield1104--- via Gmclist <
gmclist@list.gmcnet.org> wrote:

> Thanks all’
>
> My tank was not full when the fuel pump pushed gas put of the canister.
> If the electric pump was not on no gas came out of the canister. The
> electric fuel pump was pushing gas out of the canister. The fuel pump had
> worked and would provide fuel pressure before it stopped putting pressure.
>
> Where can I get a complete drawing of the fuel system … including all
> vents.
>
> On Oct 16, 2019, at 8:23 PM, Jim Kanomata via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> One must double check these things befor e going on the road. We know
> about
>> that as we have done things wrong here and had to redo.
>>
>> On Wed, Oct 16, 2019 at 6:17 PM James Hupy via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> If you have raw gas draining from your charcoal canister, your fuel
>>> vapor/liquid separator in the drivers side wheel is faulty. Or, as Ken
> said
>>> you have grossly overfilled your fuel tanks.
>>> Jim Hupy
>>> Salem, Oregon
>>>
>>> On Wed, Oct 16, 2019, 5:57 PM Ken Burton via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> You have to have a hose connected incorrectly. If I remember correctly
>>>> the 2 vent lines that go to the separater valve in the left fender rear
>>> well
>>>> come off of the top of the tanks atre teed together and should not be
>>> able
>>>> to get liquid into them unless the tanks are filled to the very tippy
> top
>>>> or the vehicle is facing down or up hill.
>>>>
>>>> Also that fuel separator is mounted high and is suppose to shutoff if
>>>> liquid gets to it.
>>>> --
>>>> Ken Burton - N9KB
>>>> 76 Palm Beach
>>>> Hebron, Indiana
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>>
>>
>> --
>> Jim Kanomata
>> Applied/GMC, Newark,CA
>> jimk@appliedairfilters.com
>> http://www.appliedgmc.com
>> 1-800-752-7502
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
'73 X-Glacier 230 "Jaws"
Northern Virginia
Offlist email: rick at rickdenney dot com
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Re: [GMCnet] Fuel Problem [message #349371 is a reply to message #349356] Thu, 17 October 2019 08:13 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
Kind of like wiring a 3 way light switches setup at home. If wrong, you can get the light to come on in certain combinations, but it's still wrong.

John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] Fuel Problem [message #349415 is a reply to message #349356] Fri, 18 October 2019 17:11 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
Here's how I did it. Your mileage may vary. Identify each line off the tanks as vent or supply lines. Then the pics show. Since there's two of them, the reliability of the Mr Gasket pump seems fine but redundancy is the plus. The Mr. Gasket pumps have check valves, so you can tee the outpuls.

http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html

Worked fine when I sold the coach, I suspect they still are. CAVEAT - the supplied filters tend to develop leaks at the crimps. Discard them and purchase the Wix duplicate. Plug the selector. This uses all existing wiring and hoses, plus one fused ignition lead with 'turnover' safety

--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
Re: [GMCnet] Fuel Problem [message #349425 is a reply to message #349415] Fri, 18 October 2019 21:23 Go to previous messageGo to next message
powwerjon is currently offline  powwerjon   United States
Messages: 849
Registered: March 2013
Karma: -2
Senior Member
Looking at your electric fuel pump installation the pump layout appears to be just fine. You are NOT going to want that relay and the crimped on wiring connectors under the coach where is can get wet and the wiring corrode and it WILL fail sometime in the future. You need to consider moving the relay and wiring into a weather proof enclosure or area that does not get wet. Also, do you have a LOPSD switch in series with power to the fuel pumps?

I have included a album of the all electric fuel system I installed in 2002. You may find it interesting.

http://www.gmcmhphotos.com/photos/g3657-electric-fuel-pump-26amp-3b-filter.html

J.R. Wright
GMC Great Laker MHC
GMCGL Tech Editor
GMC Eastern States Charter Member
GMCMI
78 GMC Buskirk 29.5’ Stretch
75 GMC Avion (Under Reconstruction)
Michigan


> On Oct 18, 2019, at 6:11 PM, Johnny Bridges via Gmclist wrote:
>
> Here's how I did it. Your mileage may vary. Identify each line off the tanks as vent or supply lines. Then the pics show. Since there's two of
> them, the reliability of the Mr Gasket pump seems fine but redundancy is the plus. The Mr. Gasket pumps have check valves, so you can tee the
> outpuls.
>
> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html
>
> Worked fine when I sold the coach, I suspect they still are. CAVEAT - the supplied filters tend to develop leaks at the crimps. Discard them and
> purchase the Wix duplicate. Plug the selector. This uses all existing wiring and hoses, plus one fused ignition lead with 'turnover' safety
>
> --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
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


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Re: [GMCnet] Fuel Problem [message #349426 is a reply to message #349425] Fri, 18 October 2019 21:50 Go to previous messageGo to next message
amansfield1104 is currently offline  amansfield1104   United States
Messages: 80
Registered: August 2009
Karma: 0
Member
Thanks all.

I assume some how when the electric fuel pump quit working some how one tank was pressurized. What gets me is the mechanical pump quit and the electric stopped working. I do not know when the electrical pump quit as it was working when I left as I pressurized the system before trying too start the RV.

When the mechanical pump quit and I turned on the electric it pumps the gas out of the carbon canister.

I have not yet tried to fix the system. My hot water heart had been leaking for a while at home. I now have a hot water heater in the middle of the dinning room as the floor in closet and reinstall the hot water heater. Once the house os back together I’ll fix the RV fuel system.

I need to check the venting system some how to make sure it is working as designed or better if there is away to vent the system.

Art
> On Oct 18, 2019, at 9:23 PM, John Wright via Gmclist wrote:
>
> Looking at your electric fuel pump installation the pump layout appears to be just fine. You are NOT going to want that relay and the crimped on wiring connectors under the coach where is can get wet and the wiring corrode and it WILL fail sometime in the future. You need to consider moving the relay and wiring into a weather proof enclosure or area that does not get wet. Also, do you have a LOPSD switch in series with power to the fuel pumps?
>
> I have included a album of the all electric fuel system I installed in 2002. You may find it interesting.
>
> http://www.gmcmhphotos.com/photos/g3657-electric-fuel-pump-26amp-3b-filter.html
>
> J.R. Wright
> GMC Great Laker MHC
> GMCGL Tech Editor
> GMC Eastern States Charter Member
> GMCMI
> 78 GMC Buskirk 29.5’ Stretch
> 75 GMC Avion (Under Reconstruction)
> Michigan
>
>
>> On Oct 18, 2019, at 6:11 PM, Johnny Bridges via Gmclist wrote:
>>
>> Here's how I did it. Your mileage may vary. Identify each line off the tanks as vent or supply lines. Then the pics show. Since there's two of
>> them, the reliability of the Mr Gasket pump seems fine but redundancy is the plus. The Mr. Gasket pumps have check valves, so you can tee the
>> outpuls.
>>
>> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html
>>
>> Worked fine when I sold the coach, I suspect they still are. CAVEAT - the supplied filters tend to develop leaks at the crimps. Discard them and
>> purchase the Wix duplicate. Plug the selector. This uses all existing wiring and hoses, plus one fused ignition lead with 'turnover' safety
>>
>> --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
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


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Re: [GMCnet] Fuel Problem [message #349432 is a reply to message #349426] Sat, 19 October 2019 08:10 Go to previous messageGo to next message
Richard Denney is currently offline  Richard Denney   United States
Messages: 920
Registered: April 2010
Karma: 9
Senior Member
I would not think of an electric pump as a backup for a mechanical pump
except in cases of vapor lock, or for brief priming on startup.

If the mechanical pump quits working, you must understand why. If it is a
failed diaphragm, you absolutely do not want to run an electric pump—it
will fill the crankcase with gasoline.

It seems to me likely that whatever led to the conclusion that the
mechanical pump failed is also the cause of the other problems. It could be
a plugged filter or tank sock, or a faulty selector valve, or whatever. Fix
that first.

Rick “who tore out years of fuel system workarounds because no PO or their
mechanics would fix plugged socks and rusty tanks” Denney

On Fri, Oct 18, 2019 at 10:51 PM amansfield1104--- via Gmclist <
gmclist@list.gmcnet.org> wrote:

> Thanks all.
>
> I assume some how when the electric fuel pump quit working some how one
> tank was pressurized. What gets me is the mechanical pump quit and the
> electric stopped working. I do not know when the electrical pump quit as
> it was working when I left as I pressurized the system before trying too
> start the RV.
>
> When the mechanical pump quit and I turned on the electric it pumps the
> gas out of the carbon canister.
>
> I have not yet tried to fix the system. My hot water heart had been
> leaking for a while at home. I now have a hot water heater in the middle
> of the dinning room as the floor in closet and reinstall the hot water
> heater. Once the house os back together I’ll fix the RV fuel system.
>
> I need to check the venting system some how to make sure it is working as
> designed or better if there is away to vent the system.
>
> Art
>> On Oct 18, 2019, at 9:23 PM, John Wright via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> Looking at your electric fuel pump installation the pump layout appears
> to be just fine. You are NOT going to want that relay and the crimped on
> wiring connectors under the coach where is can get wet and the wiring
> corrode and it WILL fail sometime in the future. You need to consider
> moving the relay and wiring into a weather proof enclosure or area that
> does not get wet. Also, do you have a LOPSD switch in series with power
> to the fuel pumps?
>>
>> I have included a album of the all electric fuel system I installed in
> 2002. You may find it interesting.
>>
>>
> http://www.gmcmhphotos.com/photos/g3657-electric-fuel-pump-26amp-3b-filter.html
>>
>> J.R. Wright
>> GMC Great Laker MHC
>> GMCGL Tech Editor
>> GMC Eastern States Charter Member
>> GMCMI
>> 78 GMC Buskirk 29.5’ Stretch
>> 75 GMC Avion (Under Reconstruction)
>> Michigan
>>
>>
>>> On Oct 18, 2019, at 6:11 PM, Johnny Bridges via Gmclist gmclist@list.gmcnet.org> wrote:
>>>
>>> Here's how I did it. Your mileage may vary. Identify each line off
> the tanks as vent or supply lines. Then the pics show. Since there's two
> of
>>> them, the reliability of the Mr Gasket pump seems fine but redundancy
> is the plus. The Mr. Gasket pumps have check valves, so you can tee the
>>> outpuls.
>>>
>>>
> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html
>>>
>>> Worked fine when I sold the coach, I suspect they still are. CAVEAT -
> the supplied filters tend to develop leaks at the crimps. Discard them and
>>> purchase the Wix duplicate. Plug the selector. This uses all existing
> wiring and hoses, plus one fused ignition lead with 'turnover' safety
>>>
>>> --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
>>>
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
'73 X-Glacier 230 "Jaws"
Northern Virginia
Offlist email: rick at rickdenney dot com
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Re: [GMCnet] Fuel Problem [message #349444 is a reply to message #349432] Sat, 19 October 2019 22:01 Go to previous message
amansfield1104 is currently offline  amansfield1104   United States
Messages: 80
Registered: August 2009
Karma: 0
Member
That’s for the comment. The removed fuel pump seemed to have a bad pressure regulator. Everything worked after the pump was replaced except the electric fuel pump as to suppling fuel to the motor.

Art

> On Oct 19, 2019, at 8:10 AM, Richard Denney via Gmclist wrote:
>
> I would not think of an electric pump as a backup for a mechanical pump
> except in cases of vapor lock, or for brief priming on startup.
>
> If the mechanical pump quits working, you must understand why. If it is a
> failed diaphragm, you absolutely do not want to run an electric pump—it
> will fill the crankcase with gasoline.
>
> It seems to me likely that whatever led to the conclusion that the
> mechanical pump failed is also the cause of the other problems. It could be
> a plugged filter or tank sock, or a faulty selector valve, or whatever. Fix
> that first.
>
> Rick “who tore out years of fuel system workarounds because no PO or their
> mechanics would fix plugged socks and rusty tanks” Denney
>
> On Fri, Oct 18, 2019 at 10:51 PM amansfield1104--- via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Thanks all.
>>
>> I assume some how when the electric fuel pump quit working some how one
>> tank was pressurized. What gets me is the mechanical pump quit and the
>> electric stopped working. I do not know when the electrical pump quit as
>> it was working when I left as I pressurized the system before trying too
>> start the RV.
>>
>> When the mechanical pump quit and I turned on the electric it pumps the
>> gas out of the carbon canister.
>>
>> I have not yet tried to fix the system. My hot water heart had been
>> leaking for a while at home. I now have a hot water heater in the middle
>> of the dinning room as the floor in closet and reinstall the hot water
>> heater. Once the house os back together I’ll fix the RV fuel system.
>>
>> I need to check the venting system some how to make sure it is working as
>> designed or better if there is away to vent the system.
>>
>> Art
>>> On Oct 18, 2019, at 9:23 PM, John Wright via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>
>>> Looking at your electric fuel pump installation the pump layout appears
>> to be just fine. You are NOT going to want that relay and the crimped on
>> wiring connectors under the coach where is can get wet and the wiring
>> corrode and it WILL fail sometime in the future. You need to consider
>> moving the relay and wiring into a weather proof enclosure or area that
>> does not get wet. Also, do you have a LOPSD switch in series with power
>> to the fuel pumps?
>>>
>>> I have included a album of the all electric fuel system I installed in
>> 2002. You may find it interesting.
>>>
>>>
>> http://www.gmcmhphotos.com/photos/g3657-electric-fuel-pump-26amp-3b-filter.html
>>>
>>> J.R. Wright
>>> GMC Great Laker MHC
>>> GMCGL Tech Editor
>>> GMC Eastern States Charter Member
>>> GMCMI
>>> 78 GMC Buskirk 29.5’ Stretch
>>> 75 GMC Avion (Under Reconstruction)
>>> Michigan
>>>
>>>
>>>> On Oct 18, 2019, at 6:11 PM, Johnny Bridges via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>>
>>>> Here's how I did it. Your mileage may vary. Identify each line off
>> the tanks as vent or supply lines. Then the pics show. Since there's two
>> of
>>>> them, the reliability of the Mr Gasket pump seems fine but redundancy
>> is the plus. The Mr. Gasket pumps have check valves, so you can tee the
>>>> outpuls.
>>>>
>>>>
>> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html
>>>>
>>>> Worked fine when I sold the coach, I suspect they still are. CAVEAT -
>> the supplied filters tend to develop leaks at the crimps. Discard them and
>>>> purchase the Wix duplicate. Plug the selector. This uses all existing
>> wiring and hoses, plus one fused ignition lead with 'turnover' safety
>>>>
>>>> --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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>>>
>>>
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>>
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> --
> '73 X-Glacier 230 "Jaws"
> Northern Virginia
> Offlist email: rick at rickdenney dot com
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