I have a 1991 Mustang w/ 5.0. Motor was bored .030 over, B303 Cam, newer 19lb 4 hole injectors, cold air kit, MSD Cap,Rotor,Wires, Coil. Number 3 Cylinder is fouling and it smells like raw fuel out of Exhaust. Runs great over idle, but its hard to start and idles rough. Could anyone help?