Hi,
I have a 97 Ex 5spd. Every month or so I will start the car and the engine misfires throughout the rpm range. The ECU will through Misfire codes on random cylinders. After a few minutes of driving the misfire goes away. It could be a few weeks or few months and then it will return. I have replaced: cap/rotor, plugs, and wires.

Any Help would be appreciated.

Thanks