The code my ford 2.5 engine reads say spark interruption

Question

Code reader Says
Spark interruption on number 4 cylinder.
I changed the plugs, wires , and coil packs.
Still has same code. 3004  I think

Answer 1

P0304 Misfire number 4 cylinder

When it comes to a misfire condition , what this mean is that cylinder is not contributing this can be from a ignition problem to a mechanical problem, to a injector , since you already did the sparkplug and the coil pack this ruled out the ignition side, and the misfire is still present you would need to rule out a mechanical condition. do a compression test on that cylinder in comparison to the other cylinder you should not be lower than 25 percent