So the past few days I've been chasing down some issues I've been having with the 350 in my '73 K10. It runs pretty decent, but has a hard time starting in the morning and smells very rich while running. Fuel mileage is also pretty low, probably hovers around 6 mpgs even with me babying the thing. The fumes are enough to make my eyes water on occasion. I know it's an old truck without a cat, but this seems worse than it should be.
I figure it's probably in need of new plugs, wires, distributor cap etc. I'm planning to replace those, but I figured that I'd take a look at the carb too, thinking that could be the culprit of my cold start issues. After taking off the air cleaner I noticed a cable wasn't connected. It looks like it should run to the throttle bracket but I don't know what it's for or what it does so I was hoping ya'll could help me figure it out.
Thanks!