1993 running rich at idle

it started as running lean found bad fuel pump and injectors then running rich so i changed the fuel pump, fuel filter, injectors, rebuilt dist., idle control module, temp sensors, coil, throttle position switch,and oxygen sensor with new wires and plugs it has 170000 miles and is a 4.3w engine

did you replace the "nut kit". this is the 2 fuel lines that run inside the plenum to the injector, and they are bad to crack and leak.