Okay, I know I may get flamed for this and I did do a search but I didn't find anything that was quite what is happening to me.
My original engine (KA24DE) took a dump on me, so I bought another one with 105k miles on it. We swapped it in and started it and had a miss in the number 4 cylinder. So we changed the injectors and fuel rail, still had a miss. Changed the plugs, still a miss. Then we changed the wires, and it was fixed.
I drove it around for a day, then parked it. Went back to drive it the next day, turned the key, and now I have a miss in the number 2 cylinder. We changed the crank sensor (or I think that's what it is) and the rotor and cap, it didn't fix the problem. And for some reason the miss will come and go. It'll be missing when I start it, drive it a few feet, and it will clear up (sometimes). Now if I park to go inside a store or when I'm at home and come out like an hour or so later, it's missing again. I don't understand why it would just do it sometimes and be fine the next.
Would anyone have any idea of what's going on?