| [GMCnet] electronic choke [message #143277] |
Tue, 13 September 2011 23:51  |
Brian Waddell
Messages: 409
Registered: March 2010
Karma: -4
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Senior Member |
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I can't seem to get this electronic choke adjustrd properly....it would appear that the metallic spring is installed backward on the unit.I have the wires connected correctly....the red wire connects from a always on 12v source to the black box of the electronic unit....the white wire connects from a ign. keyed 12v to the black box.....2 black wires come from the black box and connect to the choke unit on the carb...they have female and male connectors so as not to get them mixed....the keyed source allows power to the metallic spring which turns counterclockwise as it heats....Now to my question.....this spring has a hook on the end of it......the carb choke boss that this would POSSIBLY hook underneath to, raises upward as the choke module is turned counterclockwise and the choke closes....then the spring heats up and rotates counterclockewise gradually returning the choke boss and therefore the choke plates to open....if this is correct I have taken my coiled spring off
and reversed it to make this thing work this way....I do not think this is right....what for then the heat sensor attached to block....I have all the literature on this unit....one of my biggest guestions is does the spring hook go under or over the choke boss as it will not INSERT TO or ATTACH TO as the directions call for...thanks for help....this has been along on going problem for me.....it does not work right no matter how many adj I make...brian 455 77 ele with orig mh carb
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| Re: [GMCnet] electronic choke [message #143280 is a reply to message #143278] |
Wed, 14 September 2011 06:14  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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There is one thing you need to know here;
The grounding is very tricky here, and that can cause delay in heating the coil.
People have advised me that they have seen small arc in the throat of
the carburetor at night .
On Wed, Sep 14, 2011 at 2:59 AM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Brian,
>
> Here's what I THINK I know! ;-)
>
> I am looking at picture:
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=6781
>
> It looks like the bi-metallic spring is wound in the clockwise direction.
>
> When power is applied it should unwind in the counterclockwise direction.
>
> IIRC the choke plate on the Q-Jet is spring loaded to close. When you first start a GMC you floor it to set the choke.
>
> The above information is probably of no use to you, however, it's the best I can come up with!
>
> Regards,
> Rob
>
> -----Original Message-----
> From: Brian Waddell
>
> I can't seem to get this electronic choke adjustrd properly....it would appear that the metallic spring is installed backward on the
> unit.I have the wires connected correctly....the red wire connects from a always on 12v source to the black box of the electronic
> unit....the white wire connects from a ign. keyed 12v to the black box.....2 black wires come from the black box and connect to the
> choke unit on the carb...they have female and male connectors so as not to get them mixed....the keyed source allows power to the
> metallic spring which turns counterclockwise as it heats....Now to my question.....this spring has a hook on the end of it......the
> carb choke boss that this would POSSIBLY hook underneath to, raises upward as the choke module is turned counterclockwise and the
> choke closes....then the spring heats up and rotates counterclockewise gradually returning the choke boss and therefore the choke
> plates to open....if this is correct I have taken my coiled spring off and reversed it to make this thing work this way....I do not
> think this is right....what for then the heat sensor attached to block....I have all the literature on this unit....one of my
> biggest guestions is does the spring hook go under or over the choke boss as it will not INSERT TO or ATTACH TO as the directions
> call for...thanks for help....this has been along on going problem for me.....it does not work right no matter how many adj I
> make...brian 455 77 ele with orig mh carb
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,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
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| Re: [GMCnet] electronic choke [message #143366 is a reply to message #143278] |
Wed, 14 September 2011 16:16 |
Brian Waddell
Messages: 409
Registered: March 2010
Karma: -4
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Senior Member |
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that in the pic is what I have.....when I apply 12 v to the keyed 12v post on that choke on the shop bench,,,the spring turns counterclockwise unwinding as you look at the spring...brian
> From: robmueller@iinet.net.au
> To: gmclist@temp.gmcnet.org
> Date: Wed, 14 Sep 2011 16:59:14 +1000
> Subject: Re: [GMCnet] electronic choke
>
> Brian,
>
> Here's what I THINK I know! ;-)
>
> I am looking at picture:
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=6781
>
> It looks like the bi-metallic spring is wound in the clockwise direction.
>
> When power is applied it should unwind in the counterclockwise direction.
>
> IIRC the choke plate on the Q-Jet is spring loaded to close. When you first start a GMC you floor it to set the choke.
>
> The above information is probably of no use to you, however, it's the best I can come up with!
>
> Regards,
> Rob
>
> -----Original Message-----
> From: Brian Waddell
>
> I can't seem to get this electronic choke adjustrd properly....it would appear that the metallic spring is installed backward on the
> unit.I have the wires connected correctly....the red wire connects from a always on 12v source to the black box of the electronic
> unit....the white wire connects from a ign. keyed 12v to the black box.....2 black wires come from the black box and connect to the
> choke unit on the carb...they have female and male connectors so as not to get them mixed....the keyed source allows power to the
> metallic spring which turns counterclockwise as it heats....Now to my question.....this spring has a hook on the end of it......the
> carb choke boss that this would POSSIBLY hook underneath to, raises upward as the choke module is turned counterclockwise and the
> choke closes....then the spring heats up and rotates counterclockewise gradually returning the choke boss and therefore the choke
> plates to open....if this is correct I have taken my coiled spring off and reversed it to make this thing work this way....I do not
> think this is right....what for then the heat sensor attached to block....I have all the literature on this unit....one of my
> biggest guestions is does the spring hook go under or over the choke boss as it will not INSERT TO or ATTACH TO as the directions
> call for...thanks for help....this has been along on going problem for me.....it does not work right no matter how many adj I
> make...brian 455 77 ele with orig mh carb
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] electronic choke [message #143369 is a reply to message #143299] |
Wed, 14 September 2011 16:25 |
Brian Waddell
Messages: 409
Registered: March 2010
Karma: -4
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Senior Member |
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that is an electric choke, not electronic...it appears the spring loop fits inside the choke tang on that one and rotates the choke whenever the lectric choke is turned..anyway it is different...brian
> To: gmclist@temp.gmcnet.org
> From: dennisfsexton@aol.com
> Date: Wed, 14 Sep 2011 09:26:58 -0500
> Subject: Re: [GMCnet] electronic choke
>
>
>
> Brian,
>
> Take a look at this photo album by SteveF for some help...
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=3635&cat=3364
>
> Dennis
>
> Robert Mueller wrote on Wed, 14 September 2011 01:59
> > Brian,
> >
> > Here's what I THINK I know! ;)
> >
> > I am looking at picture:
> >
> > http://www.gmcmhphotos.com/photos/showphoto.php?photo=6781
> >
> > It looks like the bi-metallic spring is wound in the clockwise direction.
> >
> > When power is applied it should unwind in the counterclockwise direction.
> >
> > IIRC the choke plate on the Q-Jet is spring loaded to close. When you first start a GMC you floor it to set the choke.
> >
> > The above information is probably of no use to you, however, it's the best I can come up with!
> >
> > Regards,
> > Rob
> >
> > -----Original Message-----
> > From: Brian Waddell
> >
> > I can't seem to get this electronic choke adjustrd properly....it would appear that the metallic spring is installed backward on the
> > unit.I have the wires connected correctly....the red wire connects from a always on 12v source to the black box of the electronic
> > unit....the white wire connects from a ign. keyed 12v to the black box.....2 black wires come from the black box and connect to the
> > choke unit on the carb...they have female and male connectors so as not to get them mixed....the keyed source allows power to the
> > metallic spring which turns counterclockwise as it heats....Now to my question.....this spring has a hook on the end of it......the
> > carb choke boss that this would POSSIBLY hook underneath to, raises upward as the choke module is turned counterclockwise and the
> > choke closes....then the spring heats up and rotates counterclockewise gradually returning the choke boss and therefore the choke
> > plates to open....if this is correct I have taken my coiled spring off and reversed it to make this thing work this way....I do not
> > think this is right....what for then the heat sensor attached to block....I have all the literature on this unit....one of my
> > biggest guestions is does the spring hook go under or over the choke boss as it will not INSERT TO or ATTACH TO as the directions
> > call for...thanks for help....this has been along on going problem for me.....it does not work right no matter how many adj I
> > make...brian 455 77 ele with orig mh carb
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
> --
> Dennis S
> 73 Painted Desert 230
> Germantown, TN
> _______________________________________________
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| Re: [GMCnet] electronic choke [message #143374 is a reply to message #143366] |
Wed, 14 September 2011 17:22 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Brian,
OK, now that you've confirmed that we need to look at the series of pictures that Dennis provided the link to:
This is the last picture in the series and as best I can tell the rod that attaches the choke spring to the choke flapper must move
to the right to open the choke:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=3637
I realize that this is NOT the same type of choke as you have; however, the spring is wound in opposite direction of the spring in
the choke you have.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=6781
Therefore your statement "if this is correct I have taken my coiled spring off and
reversed it to make this thing work this way" is correct.
The answer to your question; "one of my biggest guestions is does the spring hook go under or over the choke boss as it will not
INSERT TO or ATTACH TO as the directions call for" is that the spring hook goes on top of the "lever arm" inside the choke housing.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=3636
Regards,
Rob M.
-----Original Message-----
From: Brian Waddell
that in the pic is what I have.....when I apply 12 v to the keyed 12v post on that choke on the shop bench,,,the spring turns
counterclockwise unwinding as you look at the spring...brian
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] electronic choke [message #143395 is a reply to message #143382] |
Wed, 14 September 2011 18:45 |
Brian Waddell
Messages: 409
Registered: March 2010
Karma: -4
|
Senior Member |
|
|
really....then I will install the choke ...then turn it counterclockwise so that the backside(not the open side of the hook) will push up against the choke lever.....my hook is rubbercovered.....you would think that the covering is there for a reason....I guess the backside of the hook is rubber covered also....My instructions say engage the hook...Hard to believe there is no reason for the hook...brian... pissed off with this
> To: gmclist@temp.gmcnet.org
> From: larry.whisler@hotmail.com
> Date: Wed, 14 Sep 2011 18:04:57 -0500
> Subject: Re: [GMCnet] electronic choke
>
>
>
> Brian,
>
> The one I installed had a "hook" on the spring.
>
> I installed it turning it counter clock wise. The
> choke arm hits the back side ot the "hook'.
>
> The one I installed does not engage the hook.
>
> I think when those are made the "hook" is simply where the metal in bent to push the choke control. After it warms up the tnesion is released and the choke springs back to the off
> position.
>
> larry whisler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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