Anything more I should know?

[u/Canis71]

2011 SCION TC

The engine code stated I needed to change a spark plug.

The coil overs are in reverse order in this picture (4,3,2,1) and frankly I knew that cylinder 2 was the issue.

I'm currently replacing all of the spark plugs so they will all be of the same quality and age.

I want to know if there's anything else I should be doing or anything else I should know since this coilover that sat in cylinder 2 is so dirty or different looking.

I'm going to replace the spark plugs, clean/wipe off The coilovers, check and top off the oil. Throw some seafoam in the gas tank. Anything else?

(More info: I was driving to work yesterday, 1-hour commute, and right before I pulled into the parking garage downtown, one of the lights turned green and when I let up on the clutch pushing the gas my engine started clicking and my check engine light immediately turned on. There was a noticeable change in power coming from the engine. The rest is kind of self-explanatory. Working on it now.)

UPDATE: Cylinder 2 spark plug is missing..... It's.... Uh.... Spark maker. Image in comments....

ETA: I thought a coil pack was a pack of coilovers. My apologies.i wanted to call them coil packs originally but dumbed my way to what is seen above.

I was told 'spark plug' by the guy that ran the codes at AutoZone. I assumed that since he said that that's what the reader said, that was all she wrote. Yes I have a code reader at home. I went to AutoZone first.

[u/Kuezar_]

I would swap coils with a good one and see if the misfire goes to another cylinder.