Low/Rough Idle Question

[Paulaner]

I hope you find your solution. It is out there. Much useful information above, and it is great you are sharing what you try as you work through this dieseling. In my own, limited experience, the '90's era Weber 32/36s that I rebuilt, responded well and I am very happy at how they perform now. But I would not proceed with any rebuild if I could not deal with throttle shaft vacuum leak. Fortunate to have the Canadian distributor for Weber here in Vancouver, and I installed these inexpensive bearings that eliminate the vacuum leak in older Webers. Yes, may not be your issue, and only part of the process, but these helped me get to the end of the quest for tuned, synchronized, strong idling and no dieseling, pair of Webers. Good luck and keep us updated! Mike
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@bluecoupe30! - can you share the link to that site please?
I'm close to Seattle so shipping from that Vancouver distro would be cheap if I find I need those parts. Thanks.

 

[bluecoupe30!]

Sure thing: It is : weberjets.com

 

[Paulaner]

Me again...so going to do a full ignition timing sequence this weekend since an additional 1/8 clockwise turn of the dizyy did not correct the dieseling at shutdown.

Sorry for the noob question but how/where do you adjust the idle so you can get the RPMs to increase to 1700?

I know where the idle speed adjustment screws are for each carb, but since they are synced and share a throttle linkage, do you use the one for the front carb, the rear carb or by other means?

 

[tochi]

how/where do you adjust the idle so you can get the RPMs to increase to 1700?
I know where the idle speed adjustment screws are for each carb, but since they are synced and share a throttle linkage, do you use the one for the front carb, the rear carb or by other means?

It has been a while since I fiddled with a dual carb set up. I believe that if you study the linkage you will find a set screw for your purposes.

https://e9coupe.com/forum/threads/my-new-strobo-gun-how-to-set-timing-please-help.12400/
https://www.weberperformance.com.au/wp-content/uploads/2024/01/32_36_DGV-Adjustments.pdf

 

[lip277]

For Weber's, the electrical solenoids are supposed to cut fuel (when switched off) to not allow the motor to diesel along after the ignition is cut.
I had a 2002 in California (in the 1980's) and installed a Weber 32/36 DGAV in place of the original Solex carb when I had the motor rebuilt. There was only one CARB compliant carburetor I could install then (other than the OE Solex) and that was a water choke, electrical cutoff solenoid Weber as I noted above. If the car was idling and you pulled the wire off the solenoid - the car quit (at least mine did -and I believe that was the intent).
If yours continues to run after the ignition is switched off - does the power to your solenoids stay energized? Something seems odd here....