Ok this might be a kinda half ass approach, but it might work. If you're standing beside the truck looking at the base of the carb you'll see two adjustment screws. Left is idle speed and right is idle mixture. With the truck warm and idling slowly screw in the mix till the rpm changes, then back it out till it starts revving up, back it down till it evens out and idles smooth and it should be right. I could be wrong, and I'm sure there are steps I'm missing, but like I said it's kind of a half ass way of doing it. I'm sure someone with a better idea will pipe in soon, Nate
