97 accord lx f22b2. My car has been idling a little rougher than normal recently, and it's also hesitating a little bit. I know about the egr port cleaning procedure and intend to do that, but what I also found was very erratic spark to mostly the number one and four cylinders (I found this with a timing light). I switched the cap, rotor and wires with my other accord and it changes nothing. I'll be checking the igniter and coil today. Any suggestions? Thanks

 

You have covered the basics that I would have suggested.

Along with the EGR cleaning you could also do an IACV and throttle body cleaning. Good write up in the FAQ. Cleaning these parts every year or two can go along way for improving your cars idle and throttle response.

Good luck with your trouble shooting

 

How about replacing spark plugs.