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Stromberg questions

jcatnite

Jedi Knight
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https://www.flickr.com/photos/31252089@N00/108161173/

https://www.flickr.com/photos/31252089@N00/108161174/in/photostream/

Here are some photos from back when I decided to rebuild my Zenith. Car ran a lot better after that but I have a couple of questions. In the first picture there is a connection (has the 1/4" fuel line that runs out of sight) to the charcoal canister. I discovered that if I pinch this hose off the car will not run. I can get it to start after a little while but then it just stalls out. My question is, could this be the port that provides the reference signal to the lower section of the diaphragm? Anyway, in the second picture, I found a mystery connection that I never knew about. The connection was professionally capped with a piece of hose an a screw...lol. I capped it for now but was wondering if anyone knew where this was supposed to go? What got me started on all of this was the fact that I noticed my anti run on valve wasn't connected to anything. Then later I noticed that it didn't matter because it is open all the time anyway or so it would seem since I can blow through it with it taken off the car.
JC
 
Hi JC,

My car is a later model than yours and does not have the anti-run on valve, so I can't help you much with that, but I think the reason you'er dying when you pinch the ELC hose is because your bowl is not able to vent and you are creating a kind of vapor lock. In other words, the air pressure in the bowl can not normalize and allow the engine to suck more fuel through the jets.

Just a (possibly stupid) theory.
 
You might be onto something. I didn't think about trying to chase that port out when I had the carb apart. I figured it was just emissions junk and was quite shocked when I pinched it yesterday...lol. It kills the car within a second or so...lol.
JC
 
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