i have replaced the plugs, wires, and the coil. The check engine light came on and the code indicated a no. 2 cylinder misfire. Repeatedly. I checked the wire and plug and they seemed fine. The missing seems to occur below 1800 or so rpms, at freeway speeds it seems fine. No loss of power or gas mileage. But it does miss, especially at idle. Anybody have any ideas where I might look?