Hi I have a 1987 Mustang
GT Convertible 5.0 High Output and I have a Problem. When my car is in idel it is very high and the car is running real rich. I just replaced my valve covers and my upper intake gasket cover and I fixed the vacum lines that were leaking. I'm not sure why my car is running so high in idel and is running rich, It smells like gas as soon as i turn it on and if i put my foot in the pedal black smoke shoots out. Any suggestions on how to fix this? thanks a bunch!