I had a similar problem with my Stromberg 175CDTU carburetor, whereby a gasoline leak originated from the vicinity of the automated choke mechanism. The carburetor was disassembled, and the gaskets and diaphragms were replaced, with the exception of the one on the automated choke, due to a stripped screw.
What is the procedure for doing a vacuum test or inspection on a carburetor while it is detached from the engine? Additionally, is there a method to verify the functionality of the automated choke?
I conducted three rounds of verification on the floats, which were adjusted to a measurement of 16/17mm. Additionally, I replaced the float needle with a new one.
Do you have any suggestions or ideas to contribute? I have observed that the startek handbook seems to lack a certain PDF file, namely 072-136. If somebody had this, it would be advantageous.
The included image depicts the location of the leak.