When she starts it, you can hear that only one or 2 cylinders is firing, it takes some throttle and a few seconds to get the car to idle but as soon as the idle steadies, the car runs fine and restarts just fine when it remains warm.

The issue has only started in the last week.

I know this car uses coil on plugs, I took the engine cover off, and re-seated all the coils. That's about as far as I got on my own.

What should I check?