Alright, so I have an 88 yj with the 4.2l stock carter carb, it idles fine after start up at around 800-900... but getting it to start is a pain in the ***... the idle isn't rough anymore, doesn't sputter or anything. I just don't know why it doesn't like to start, I have a manual choke, which helps a little. The only way I get it to start at the moment is a little spray of carb cleaner in the top of the carb, and put air cleaner back on and it'll fire up.
Closed it all the way, had the same problem when I had the electric choke on there as well. Sometimes it'll start right up and then other times (Trying to start it the same as before) It won't start up. But I have thought of putting the electric choke back on.
No, I have done the nutter bypass, and my stock air cleaner was rusted out, I bought a air cleaner that sits right on top of the carb. I am giving it a pump of gas, it actually has been starting fine for me today :P but other times it doesn't. But the whole air cleaner removal stalling it out is still confusing me, along with stalling when I brake.
Mine is a orange plastic piece, wasn't sure of the name. The linkage there just moves up and down by hand, when the choke opens and closes it just moves around in the opening, I tried using a zip tie to hold it still so it will move up and down when the choke opens or closes.
You can see in the back, the orange plastic thing is down, the lever on it is straight up. If you look above there towards top of carb, you can see the linkage hooked there, it just moves freely in that opening, moving the choke it doesn't pull it up or down, in fact it didn't do it when I had the electric choke either because the only way I could keep my jeep running while stopping and such, that orange thing had to always be leveled out, so I had it duct taped, now that its not I can't drive and stop without stalling.