the idle is not 'terribly' rough, just not as 'smooth' as it should be. I note that the rpm under load (after the car is warm) when idling drops to just above
500 and increases to just short of 700 in park. I've changed the distributor and rotor of course, wires appear good (although not new) and I've changed the O2 sensor (hurray it passed emission with flying colours then) I just for the world can't figure out what might be causing this 'uneven' idle which is actually noticeable in terms of car vibrating a tad.What am I missing? anyone have any pointers?
cheers