Carb....

[lukeyboy60]

Just got a new carb and it has elec. choke. Previous carb didn't. What do I need to do to connect it up?

 

[BLADE262US]

The electric choke just needs 12 volts when the key is in the run position so you either have to find a power point in the fuse box that is on when the key is in the run position or you can hook it to the I believe the field wire from the alternator . /emoticons/[email protected] 2x" width="20" height="20" />

 

[Seabronc]

The electric choke just needs 12 volts when the key is in the run position so you either have to find a power point in the fuse box that is on when the key is in the run position or you can hook it to the I believe the field wire from the alternator . /emoticons/[email protected] 2x" width="20" height="20" />

The field wire is only good for some Ford Carbs because it is normally only 7 volts which the Ford carb chokes were designed for. You can tap it off the Red with Light Green stripe wire that goes to the coil (+).

Good luck,

>-

 

[lukeyboy60]

Great info. Thanks. Now, do I hook the wire to that flat post on the bottom of the round thing on the passenger side of the carb. This looks like it has something to do with the choke. Also it only needs one wire? Thanks again.

 

[will.koch]

We replaced the engine on my '67, and the electric choke seems to be keeping us from testing the new 302... Can any of you describe how exactly this thing works? I'm guessing the 7/12 volts allows the spring inside to turn the lever, which in turn opens/closes the choke plates.. Where does the choke get its signal to open/close?

I guess, really, I'm trying to say, how can I trouble shoot this thing? Should the electric choke simply close the plates until the engine warms up enough, and then something else will force the plates open, against the internal spring's resistance?

Any help would be greatly appreciated.. Thanks a bunch

-Will

 

[BLADE262US]

The electric choke is a bimetal spring when you put 12 volts to it the spring gets hot and it unwinds . If you ever have a bad one to take apart as I have there is another bimetal contact system under the cover of the + side spade connector when this gets to a certain temp it breaks contact interupting power to the main coil spring in the choke housing . When you set the choke you are winding the spring up as you turn the housing to close the choke when the spring gets hot it unwinds letting the choke open . The other system under the spade acts as a voltage regulator in sorts . If you want to see this work so you know Im not talking out my **** take the choke cover off and look at the inside you will see the spring now clip a battery charger on it and turn it on then watch the spring it will start to unwind thats how it works /emoticons/[email protected] 2x" width="20" height="20" />

 

[lukeyboy60]

The electric choke is a bimetal spring when you put 12 volts to it the spring gets hot and it unwinds . If you ever have a bad one to take apart as I have there is another bimetal contact system under the cover of the + side spade connector when this gets to a certain temp it breaks contact interupting power to the main coil spring in the choke housing . When you set the choke you are winding the spring up as you turn the housing to close the choke when the spring gets hot it unwinds letting the choke open . The other system under the spade acts as a voltage regulator in sorts . If you want to see this work so you know Im not talking out my **** take the choke cover off and look at the inside you will see the spring now clip a battery charger on it and turn it on then watch the spring it will start to unwind thats how it works /emoticons/[email protected] 2x" width="20" height="20" />

Same principle in as air conditioner thermostat. Usually copper on one side and alum. on the other. Copper expands at a lower temp that alum. and alum. cools faster, hence, it moves.

Got it hooked up. There was some wire hanging around connected to the battery with elec tape on the end of it. I tried it and it worked perfect. Thanks for the help. /

 

[BLADE262US]

Glad I could help ya I like to know how things work and usually keep messing with it till I find out . /emoticons/[email protected] 2x" width="20" height="20" />