Still looking for answers on 96 Corsica 2.2

With the engine runnung use a automotive stethoscoope adainst each injector. And listen for a clicking sound. If you don't have a stethoscope use a long screwdriver, put the metal end on the injector and listen throuh the handle. When replacing the injector be sure that you use one havr the identical part nuimber. Unplug the electrical connector. Remove the fue metercover. Do NOT remove the fuel meter cover assemble gasket. Using two screwdrivers to pry out the injector. There are many injector cleaners on the market. I would use a popular brand such as stp or gumout