Hi,
I watched each of the videos. I noticed that the check engine light wouldn't flash until it was under a heavy load. When it flashes, that indicates the misfire is occurring. When it stays solid, there shouldn't be a misfire occurring.
Okay, the idea that the converters were stolen led me to ask what was done with the oxygen sensors. Also, when the light isn't flashing, do you still feel a misfire? Is the only code stored a P0304?
Let me know. Also, let me know if you feel the misfire when the check engine light is not flashing. One last question. If your scan tool has live data settings, check to see what the short-term fuel trims are and check the engine coolant temperature sensor signal as well. With the engine cold, the ECT signal should be very close to ambient temperature.
Take care,
Joe
Saturday, March 19th, 2022 AT 7:35 PM