SU Carb Choke Cable Adjustment

[Jughead]

Hi all,  Does anyone have good step-by-step instructions for adjusting the Choke Cables on SUs?   I'm having a hard time finding an adjustment wherein a) the Nozzle comes down with Choke on,  and b) the idle is reasonable (~ 900) with choke off and engine warm.

 

Thanks!!

[jonathanrussell]

Hey @Jughead

This is kind of old but I am just now reading it so I thought I would respond. I have never really thought about how I do this in steps but here is my best shot from memory. Also, I assume you are asking about pre-1973 round top carbs.

1) Make sure your nozzles open and close freely. Once verified, fully close the nozzles.

2) Make sure cable wires are straight and not bent / kinked.

3) Move choke lever inside car to off position.

4) feed cable wires through clamp holes on carbs. Don't tighten yet.

5) Tighten base of cable sheath to carb.

6) Tighten cable wire clamps.

7) Test that when you engage choke the nozzles open up. Reach down under the carbs and feel the gap open up as the nozzles move down.

8 Test that when you move the choke off the nozzles close.

9) Hopefully with this done your choke light goes off when you move the choke lever to the off position.

10) Choke should move freely without effort. If this is not the case, something is wrong, kinked, etc.

 

Edited April 20, 2022 by jonathanrussell

[Johnny wick]

Any video tutorial?

Edited August 11, 2024 by jalexquijano

[Johnny wick]

On 4/19/2022 at 9:33 PM, jonathanrussell said:

Hey @Jughead

 

This is kind of old but I am just now reading it so I thought I would respond. I have never really thought about how I do this in steps but here is my best shot from memory. Also, I assume you are asking about pre-1973 round top carbs.

 

1) Make sure your nozzles open and close freely. Once verified, fully close the nozzles.

2) Make sure cable wires are straight and not bent / kinked.

3) Move choke lever inside car to off position.

4) feed cable wires through clamp holes on carbs. Don't tighten yet.

5) Tighten base of cable sheath to carb.

6) Tighten cable wire clamps.

7) Test that when you engage choke the nozzles open up. Reach down under the carbs and feel the gap open up as the nozzles move down.

8 Test that when you move the choke off the nozzles close.

9) Hopefully with this done your choke light goes off when you move the choke lever to the off position.

10) Choke should move freely without effort. If this is not the case, something is wrong, kinked, etc.

 

 

How easy should the choke lever move? I believe the original choke cable is bent somewhere. If i pull the choke handle all the way back the jet still does not move at all. I need to lift up the plastic console so i can pull it all the way back and them it starts lowering the nozzle.

[Yarb]

Go back and look at post #2 Item (10)

[dutchzcarguy]

14 hours ago, jalexquijano said:

If i pull the choke handle all the way back the jet still does not move at all. I need to lift up the plastic console so i can pull it all the way back and them it starts lowering the nozzle.

Some people are technical, and some are totally not.. i'm very sorry but i think you belong to the last catagory.. you must be a good bookkeeper though..
Again i'm sorry but someone needs to tell you to look for another hobby.. you don't have any technical insights..

And YES, I'm Dutch!  We tell it strait to you.. in your face, we don't beat around the bush!  😉   (We can answer only that much questions..)

AGAIN, I'm SORRY!

[Johnny wick]

10 hours ago, dutchzcarguy said:

Some people are technical, and some are totally not.. i'm very sorry but i think you belong to the last catagory.. you must be a good bookkeeper though..
Again i'm sorry but someone needs to tell you to look for another hobby.. you don't have any technical insights..

And YES, I'm Dutch!  We tell it strait to you.. in your face, we don't beat around the bush!  😉   (We can answer only that much questions..)

AGAIN, I'm SORRY!

Hey man you dont know me! Im just asking a simple question and you come here with your arrogant bs comments! If you are not gonna help get a hike! Never offended no one in this forum. Wanna tell me something ill meet you at the park!

[siteunseen]

Yes, simple questions as always. 

Why are we on choke cables now? 

[Johnny wick]

16 minutes ago, siteunseen said:

Yes, simple questions as always. 

Why are we on choke cables now? 

Just want to know how much slack ahould i cut from the choke cable. This guy shows up with dumb reasoning out of the blue. Guess his Iq is below average!

[Yarb]

You don’t cut anything 

[Patcon]

5 hours ago, jalexquijano said:

Hey man you dont know me! Im just asking a simple question and you come here with your arrogant bs comments! If you are not gonna help get a hike! Never offended no one in this forum. Wanna tell me something ill meet you at the park!

No he's never met you but he has seen your posts for a number of years now and can infer some things from the questions you ask. If you're going to get your feelings hurt by his comment and lash out I am quite confident the remaining help you have here will dry up.

Also, always remember there is always someone bigger, meaner and badder than you! Best not to go around challenging people to fights. The man you underestimate might pummel you!

[Johnny wick]

1 hour ago, Patcon said:

No he's never met you but he has seen your posts for a number of years now and can infer some things from the questions you ask. If you're going to get your feelings hurt by his comment and lash out I am quite confident the remaining help you have here will dry up.

Also, always remember there is always someone bigger, meaner and badder than you! Best not to go around challenging people to fights. The man you underestimate might pummel you!

Well im just seeking for advice on how to grease the original 72 choke cable and adjust it correctly. Im doing this tomorrow hencr i need your advice and not some guy thinking he is smarter than Einstein!