Throttle Shaft Dog for 39 Desoto carter Carb

[desoto1939]

The other day I was not able to get the idle and rpm for my 39 Desoto to a point that was maing the engine run at the proper rpm on the Carter Ball and Ball Carbs.

 

I took the side panel off the car on the passenger side I moved the idle adjustment arm and saw that on the Throttle Shaft Dog that also control the fast idle and also works with the sisson choke has a flat spot and also had a groove inthe dog.  This piece should not have any grooves It should be perecftly smooth so that as the sisson choke is getting released the idle then settles down.

The dog in the pictures is the small metal band that is on the left post and rotates back as the fast idle from the choke is released. These dogs get the groove because the idle set screw rides against the dog and as the idle come down the  point of the screw wares a groove in the dog.

 

I am looking to see if anyone might have one of these in their parts bin. Will pay for the item plus shipping.

 

So if you always getting a fast idle check this on your carb. 

 

If anyone has questions please feel free to contact me

 

Refer to the attached picture of the Throttle shaft Dog

 

Rich Hartung

Desoto1939@aol.com

 

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Edited March 16, 2024 by desoto1939