oil in 1 an 3 plug hole an car misfire what can i do to fix it?

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i have a 97 plymouth breeze and when i take off the #1 plug wire from the plug the engine idle the same( rough) an also #3 does it sometime , the injectors are working ok and i also switch aoround some of the plugs to be certain that idon't need plug or plug wires i dont know whats wrong. i also went ahead an changed the coil pack an the issue is still there PLEASE SOMEONE HELP ME!