Hopefully someone can shed some light on what my issue is. I have an intermittent misfire only when I start the car when the engine is cold. You can feel the misfire when I start the engine but only lasts a few seconds. The car runs perfectly fine after. The only issue is the slight shaking when car is started. Swapped coils and spark plugs and code is still P0304. Any suggestions on what the issue might be?
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