Just a suggestion to all of you folks before you have your plug recall done.

Have your mechanic check the compression on all cylinders while he is doing the recall work. This will hopefully help warn of potential #4 cylinder problems. If nothing else it will indicate how well your engine broke in and give you a baseline to compare future readings to. My dealer (Honda City) did not even charge me for it because the plugs were out anyway (and I am a good customer).

I recorded the readings for posterity (all between 225 and 230)