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2E3 "SERVO" CHOKE.

Posted: 19 Jun 2026, 20:24
by TwinTurbo
Do people generaly find the 2e3 autochoke a bit rubbish?

I am designing a replacement for the auto choke ditching the spring, cams, bi metalic and pull down. it will be replaced with a stepper motor controlled by a microcontroler with vacuum sensing, coolant and ambient temperature. It should be able to give a smooth progression from 100% shut to 100% open without all the issues. 

There's a couple of projects in the queue before it but the code is almost done. Just need to design the motor mount primarily.

Rob

Re: 2E3 "SERVO" CHOKE.

Posted: 20 Jun 2026, 08:25
by silverbullet
When I had a fully rebuilt DG with a 2E3 it worked in all temperatures. Air leaks at the manifold gave me more trouble than the carb.
Sounds like a solution looking for a problem.

Re: 2E3 "SERVO" CHOKE.

Posted: 20 Jun 2026, 09:50
by tobydog
I find auto-chokes rubbish in general 8)