i have a 1982 mustang with a re manufactured motor craft carburetor. it is Single barrel, i am not sure but i think it is the 2700 v v but i don't have an id tag for it. i was wondering if anyone had a picture or diagram for the tuning screws. i know where the fast idle and slow idle screws are but i can't seem to find the air to fuel mixture screw to adjust it. i have had it adjusted before but now it is running rich again, last time i had it tuned the guy knew where the screw was but i cannot figure out where it is. i have searched the bottom of the carb and haven't found it. i also looked on the sides and top in case it may be placed differently. if anyone knows anything about these carbs please let me know i really need to adjust it.
If this is a single barrel carb, and it's correct for the car, its a Holley 1946 series. (The 2700 is a two-barrel...) A good service manual will be able to help you determine the screw locations, and also which carb you actually have..... No carb cleaner label I have ever seen shows a diagram of carb adjusting screws, so I don't see how THAT little piece of "advice" is gonna help.
You should not have to fool with these adjustments. Probably you have oil vapor goo that get into the idling system. HERE IS THE ANSWER. Find a place that carries Amsoil products. Buy a can of their Foaming Cleaner. Use it's nozzle;e to apply to every possible orifice of the carb. Use Gum-out spray, as well. Start by power washing your entire engine bay. THe foaming cleaner is like a carburettor rebuilder in a spray can. You can actually SEE it working, it's AMAZING!!