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Okanogan Lew
Joined: 22 Jul 2010
Posts: 45
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 Posted: Sun Oct 23, 2011 7:26 pm Post subject: Electric boost pump CJ6 |
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Guys, I have installed an electric fuel boost pump to replace the wobble pump in my CJ6. It is a 3-5 psi, 32 gpm flow thru pump that will allow fuel to pass even if it is not running. I removed the wobble pump & the lines to the check valve & mounted the pump inside the belly with lines to the check valve the same as the wobble pump lines. I have fuel flowing on the pressure side of the pump, but there is no fuel flowing into the fuel pump on the engine. I think the pump is just forcing the fuel thru the small by pass lines on the check valve & back into the pump. I am planning to plug the small by pass lines, so that the fuel will be pumped up to the engine. Any thoughts or suggestions? Thanks.
Paul Lewis
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cjpilot710(at)aol.com
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| Posted: Sun Oct 23, 2011 8:00 pm Post subject: Electric boost pump CJ6 |
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Make sure you have in / out lines hooked up properly.
Pappy
In a message dated 10/23/2011 11:30:01 P.M. Eastern Daylight Time, vplewis(at)community.org writes:
| Quote: | --> Yak-List message posted by: "Okanogan Lew" <vplewis(at)community.org>
Guys, I have installed an electric fuel boost pump to replace the wobble pump in my CJ6. It is a 3-5 psi, 32 gpm flow thru pump that will allow fuel to pass even if it is not running. I removed the wobble pump & the lines to the check valve & mounted the pump inside the belly with lines to the check valve the same as the wobble pump lines. I have fuel flowing on the pressure side of the pump, but there is no fuel flowing into the fuel pump on the engine. I think the pump is just forcing the fuel thru the small by pass lines on the check valve & back into the pump. I am planning to plug the small by pass lines, so that the fuel will be pumped up to the engine. Any thoughts or suggestions? Thanks.
Paul Lewis
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=355839#355839
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[quote][b]
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okanoganlew(at)gmail.com
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| Posted: Mon Oct 24, 2011 7:43 am Post subject: Electric boost pump CJ6 |
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Typo error in original message. Should be 32 GPH instead of GPM.
Paul
On Sun, Oct 23, 2011 at 8:57 PM, <cjpilot710(at)aol.com (cjpilot710(at)aol.com)> wrote:
[quote] Make sure you have in / out lines hooked up properly.
Pappy
In a message dated 10/23/2011 11:30:01 P.M. Eastern Daylight Time, vplewis(at)community.org (vplewis(at)community.org) writes:
| Quote: | --> Yak-List message posted by: "Okanogan Lew" <vplewis(at)community.org (vplewis(at)community.org)>
Guys, I have installed an electric fuel boost pump to replace the wobble pump in my CJ6. It is a 3-5 psi, 32 gpm flow thru pump that will allow fuel to pass even if it is not running. I removed the wobble pump & the lines to the check valve & mounted the pump inside the belly with lines to the check valve the same as the wobble pump lines. I have fuel flowing on the pressure side of the pump, but there is no fuel flowing into the fuel pump on the engine. I think the pump is just forcing the fuel thru the small by pass lines on the check valve & back into the pump. I am planning to plug the small by pass lines, so that the fuel will be pumped up to the engine. Any thoughts or suggestions? Thanks.
Paul Lewis
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=355839#355839
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et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
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wlannon(at)shaw.ca
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| Posted: Mon Oct 24, 2011 8:39 am Post subject: Electric boost pump CJ6 |
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Paul
If it is a vane type pump you must ensure that the relief & by-pass assembly is correctly mounted in relation to the direction of rotation.
Unless the ENGINE driven pump is an internal by-pass type the new auxiliary pump will NOT deliver fuel through a static engine pump.
It SHOULD be a py-pass type pump since the emergency fuel from the wobble pump is delivered in series. If non bypass it would have to be a parallel system.
The by-pass around the check valve is necessary I would not recommend plugging it.
Walt
[quote] ---
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okanoganlew(at)gmail.com
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| Posted: Mon Oct 24, 2011 10:09 am Post subject: Electric boost pump CJ6 |
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Walt, I disconnected the fuel hose to the engine pump & there is no fuel reaching that point when I turn on the boost pump. The fuel line from the boost pump to the engine side of the check valve is pumping fuel, but how can it pump up to the engine with the by pass line installed. What is the purpose of the by pass line even with the standard wobble pump? On , Walter Lannon <wlannon(at)shaw.ca> wrote: > > > > > > > > > > > > > > > Paul > > > > > > If it is a vane type pump you must ensure that the > > relief & by-pass assembly is correctly mounted in relation to the direction > > of rotation. > > > > > > Unless the ENGINE driven pump is an internal > > by-pass type the new auxiliary pump will NOT deliver fuel through a static > > engine pump. > > > It SHOULD be a py-pass type pump since the > > emergency fuel from the wobble pump is delivered in series. If non > > bypass it would have to be a parallel system. > > > > > > The by-pass around the check valve is necessary I > > would not recommend plugging it. > > > > > > Walt > > > > > ---
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