| Sparks from Electric Choke [message #250146] |
Mon, 19 May 2014 19:18  |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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I installed a rebuilt motor with the cross over plugged. Installed an electric choke, connected the choke lead to the battery post of the alternator. Started the motor up and as I would goose the throttle little sparks could be seen at right hand side of throat of carburetor, and sometimes around the choke housing.
Do I need to put a ground wire from carb to block?
Just a little bit tense to see the arcing around the carb.
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: Sparks from Electric Choke [message #250148 is a reply to message #250146] |
Mon, 19 May 2014 19:26  |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Bruce Hart wrote on Mon, 19 May 2014 18:18I installed a rebuilt motor with the cross over plugged. Installed an electric choke, connected the choke lead to the battery post of the alternator. Started the motor up and as I would goose the throttle little sparks could be seen at right hand side of throat of carburetor, and sometimes around the choke housing.
Do I need to put a ground wire from carb to block?
Just a little bit tense to see the arcing around the carb.
Bruce--is the original gasket still there between the choke housing and the carburetor body? If so, I would remove it.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Sparks from Electric Choke [message #250152 is a reply to message #250148] |
Mon, 19 May 2014 19:42 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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I will check on that!
Thanks, Bob.
On Mon, May 19, 2014 at 6:26 PM, Bob de Kruyff wrote:
> Bruce Hart wrote on Mon, 19 May 2014 18:18
>> I installed a rebuilt motor with the cross over plugged. Installed an
> electric choke, connected the choke lead to the battery post of the
>> alternator. Started the motor up and as I would goose the throttle
> little sparks could be seen at right hand side of throat of carburetor, and
>> sometimes around the choke housing.
>> Do I need to put a ground wire from carb to block?
>> Just a little bit tense to see the arcing around the carb.
>
> Bruce--is the original gasket still there between the choke housing and
> the carburetor body? If so, I would remove it.
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
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> GMCnet mailing list
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Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: Sparks from Electric Choke [message #250158 is a reply to message #250146] |
Mon, 19 May 2014 21:14 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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That problem, as Bob said, is caused by a bad ground usually at the choke body. It also can be caused by a bad ground of the carb itself to the intake manifold. Remove the gasket as Bob suggested. If you still see sparks then you need to get a good ground on the carb.
DO NOT over tighten the mounting bolts in an attempt to get a better electrical connection.
If sparks are still an issue I would run a separate ground wire between a screw (other than the mounting bolts) and any bolt on the intake manifold. You could use the bolt holding the plate covering old carb heater tube in the manifold. If you had bought an electric choke with two terminals on it then the second wire is the ground and grounding through the carb is not an issue.
Removing the gasket will probably take care of your problem depending on where you are seeing the sparks.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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