If it's a 22RE, it has a 5th injector. The cold start injector is found around the "EFI" logo that is cast into the air intake manifold.
http://www.google.com/imgres?um=1&h...6&tbnw=174&start=0&ndsp=45&ved=1t:429,r:6,s:0Picture Link
http://www.google.com/imgres?um=1&h...6&tbnw=174&start=0&ndsp=45&ved=1t:429,r:6,s:0Picture Link