Hey org. I'm having issues with misfiring again. About 8-10 months ago, I replaced my cylinder #1 injector. And about 2 months ago, I replaced my cylinder #3 injector. Now, I'm misfiring out of cylinder #3 again and I'm having a hard time finding out what my problem is. I checked the resistance on all of my injectors and they're all reading around 12 ohms. I diagnosed which cylinder has the issue by simply unplugging each coil pack while the car is running and misfiring. I swapped out both my spark plug and my ignition coil out with those of other cylinders, but am still getting the same issue out of cylinder #3. Also, keep in my mind that my car has around 233,xxx miles.

Do you guys have any idea what might be going on? I'm really hoping I can stay out of the shop given that I'm a college student. Thank you all.