Rough Idle

97 2.2 AT - I just replaced the fuel injectors. I tried to replace the spark plug wires, but I can't get at the wires on the back of the engine. (How do you guys do that?) The engine has an intermittent miss. I thought maybe I damaged one of the old wires working on the injectors. Should I continue the plug wire change (if I can) or should I look at the injector wiring? The injectors are not the same brand. I replaced them as they began leaking while I drove across country last week. I bought/replaced two at a time. (I kept having gas leaking and couldn't get the O ring kits to seal.) Managed to get the car here, but it is not running right.