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View Full Version : after a Webber swap . which wire goes to the electric choke ?



ADRIANFARINA
09-22-2011, 01:37 PM
no one answered in my thread .. and I really need an answer.
I know it should be a positive fused wire , but which one?
thanks

POS carb
09-22-2011, 02:10 PM
any wire that has 12v on ignition. you could use the pre-heater wires. i'll take a pic when it stops raining

POS carb
09-22-2011, 02:17 PM
http://img51.imageshack.us/img51/1483/preheater.jpg[/URL]

Uploaded with ImageShack.us (http://imageshack.us)[/IMG]

i assume you need to have the "ecu" hooked up for this to get power
http://imageshack.us/photo/my-images/51/preheater.jpg/

CzEcHy
09-22-2011, 02:59 PM
I cut the original choke wire from the original carb and crimped on a new terminal to fit the weber. Easy easy

ADRIANFARINA
09-22-2011, 08:22 PM
ut which wire is the original one? I can't remember and can't find it in the wiring diagram..

greentee76
09-23-2011, 01:31 PM
The wire you're looking for comes directly out of the alternator plug if that helps to narrow it down.

ADRIANFARINA
09-29-2011, 08:40 AM
are we talking about this one?

http://up353.siz.co.il/up1/njdoijxmyftd.jpg



also ,
the wire that goes to the alternator , is one of the white wires that comes out of the fuse box near the battery , which one of them?

ADRIANFARINA
10-02-2011, 09:37 PM
no one?

itzdave
10-02-2011, 10:06 PM
I cut the original choke wire from the original carb and crimped on a new terminal to fit the weber. Easy easy

What he said. I think it was a white wire...

ADRIANFARINA
10-03-2011, 09:37 PM
weird , I've tried connecting a wire straight from the + treminal to the carb but felt no change with the RPM or something.
why?

POS carb
10-04-2011, 09:41 AM
the choke will open slowly as it gets heated by the wire. it won't be a sudden change.

ADRIANFARINA
10-12-2011, 08:12 AM
so how does it effect the rpm? because I can't notice nothing? and how does th chock knows when to stop working (beside of when the car is turned off)?

2oodoor
10-12-2011, 10:07 AM
there is a bi metal coil spring that is pre engineered to contract when it gets cooler, then as long as the key is on the wire sends power to the spring which in turn heats it up and allows it to open the choke it is connected to.

When the throttle is first pressed when the engine is cold, this allows the choke to close, it does not close if the throttle is not pressed usually.
Also when the choke closes the linkage on the other side of the carb it is connected to flips up the fast idle cam stop.

You can adjust the choke "mixture" by loosening the screws a bit that secure the black cap over the coil. Then with the throttle open a little, engine off of course, you turn it to adjust the choke angle. The tighter it closes the richer, the more opening it has..the leaner.

With the Weber you may have to adjust the choke angle a little to suit your climate and complement your choice of idle jet.

ADRIANFARINA
10-12-2011, 11:27 AM
can I find it explained with pictures here on the site?
how does the throttle sends the order to the choke?
before replacing the carb , it ideled arround 2000rpm until pressing the throttle to lower the rpm , now it doeasn't happen at all..

2oodoor
10-12-2011, 11:32 AM
When the car is cold.
Before you start the car.
You press the accelerator to the floor a few times.
Then you do not press the accelerator as you start the key.
The car should crank up in fast idle with the choke on.
Webers kick off fast idle very quickly so you only get the one event of fast idle until you touch the pedal .

There is a screw over the fast idle cam slide where you can set the speed of your fast idle so you do not over rev the engine cold.

There should be pictures somewhere on the Redline website.

here is a video that may help, also this same author has several videos involving these kind of Webers.
http://www.youtube.com/watch?v=kYXvO_4SPL4&feature=related