I have an '84 CJ7 with a 4.2. The previous owner put the motorcraft 2100 in and I absolutely hate it. I can't get it to run right. At first, it wouldn't idle, so I took it apart and fixed that with the help of new spark plugs. Then, there was a mysterious leak that sounded like a tv. After I fixed that, it would idle at around 1100 or so and diesel. I then fixed that because the butterfly valves were off just a hair. Now, after it's all put back together, it'll idle idle down to about 400 if I wanted it to, BUT, when it hits 1200 or so, it coughs and sneezes until it stalls out!
I hate this stupid carb!
Can anyone point me in the right direction?!?! It's supposed to be the ideal carb (1.08, 48f jets), but I'm just loosing sleep over this dumb thing.
By the way, this is a weird 2100. It had a lever on the front by the accelerator pump that goes over the air horn, and it has a big 3 on the bottom. I think it's a lemon carb.