I'm trying to tune my standard 316 83 carb with auto choke it's running way to rich I believe and could do with adjusting the auto choke if possible and idle,if someone could tell me which screw does what? there is only one I can see on the rad side bottom right of the carb but the others I can't see? Any help would be great
Carb tuning help
Carb tuning help
Hi
I'm trying to tune my standard 316 83 carb with auto choke it's running way to rich I believe and could do with adjusting the auto choke if possible and idle,if someone could tell me which screw does what? there is only one I can see on the rad side bottom right of the carb but the others I can't see? Any help would be great
I'm trying to tune my standard 316 83 carb with auto choke it's running way to rich I believe and could do with adjusting the auto choke if possible and idle,if someone could tell me which screw does what? there is only one I can see on the rad side bottom right of the carb but the others I can't see? Any help would be great
- Peter V.
- E21 VIP

- Posts: 12128
- Joined: Sun Mar 30, 2008 12:42 pm
- My E21(s): '82 320/6
- Location: Breda, Nederland
Re: Carb tuning help
If i am correct you have the solex 2B4 on it.
To adjust idle you need to move the screw which is at the throthlelever.

The small screw which is placed at the front is the mixture.
Autochoke is more difficult because there are lott of different items that must work seperatly and correct.
To adjust idle you need to move the screw which is at the throthlelever.

The small screw which is placed at the front is the mixture.
Autochoke is more difficult because there are lott of different items that must work seperatly and correct.
Gr Peter V.
.Some say he eats nuts and bolts for breakfast, all we know is he is called the carburetorman.
BMW E21, 1981 320/6 Ascot Grau.
BMW E85, 2004 Z4 2.5i Sterling Grau.
BMW F25, 2014 X3 xDrive 2.8i Space Grau.
.Some say he eats nuts and bolts for breakfast, all we know is he is called the carburetorman.
BMW E21, 1981 320/6 Ascot Grau.
BMW E85, 2004 Z4 2.5i Sterling Grau.
BMW F25, 2014 X3 xDrive 2.8i Space Grau.
Re: Carb tuning help
That's really helped me out,thank you very much,the mixture is the one toward the radiatior side of the car,the car has a little back firing thing it does,I think once the carb is running a bit better I will have to do the timing