Weber 32/36 Progression Holes Questions

[2002#3]

While rebuilding a Weber 32/36, I decided to make sure the channel to each progression hole was open.  I had already cleaned the completely disassembled carb body ad naseaum.  I blew brake cleaner into every orifice I could find; however, cleaner squirted from only 2 of the 3  primary (32) progression holes and neither of the 2 secondary (36) progression holes.  Total, 2 of 5.

 

Q:  Was my approach correct?

Q:  How do you folks check these channels, IF you check them at all?

 

Thanks.

[Dudeland]

Ultrasonic cleaner would work. 

 

The holes are very important, There is a F number on it.  Likely F51, but check them out and report back.  You can try getting a set of cleaners used for torches, like the ones below. 

 

If they are blocked you will get weird enrichment as you go through the RPM range. If you need some jets let me know I have some spares kicking around. 

 

I actually modified my emulsion tubes because it was too fat down low. It worked.  

 

This guy is the oldest school wizard, and walks through the emulsion tubes.  

 

 

[2002#3]

Thanks. 

 

Much-Needed-Clarification: 

(i) All parts (emulsion tubes, jets, etc.) were removed from body and lid, 

(ii) both the lid and body were thoroughly cleaned in an ultrasonic tank,

(iii) brake cleaner was squirted into all empty orifices including the empty emulsion tube holes, and

(iv) I still could not see cleaner coming out of 3 of the 5 progression holes. 

 

So, I don't think the emulsion tubes are a problem.

 

I assumed the progression holes are served by fuel which flows from the bowl to the emulsion tubes and then to the idle and progression holes.  That is why I also assumed forcing cleaner into the emulsion tube holes was a good way to clean the progression hole pathways.

 

Keep your thoughts coming, please.

 

Edited March 17 by 2002#3
clarification of text

[TobyB]

Squirt harder.

 

Squirt backwards.

 

If that fails, drill out the plugs and mechanically ream out the passages.

 

I've had to do that on agricultural carbs that were fed corn soup...

 

t