ive replaced the cap, rotor, wires, and plugs and my no. 1 cylinder still isnt firing consistently at idle. it seems to fire about 1 out of every 3 times it should. when i pull the wire off the plug, there is no drop in idle. anyone have any ideas what i should look at next? the cylinder is getting fuel, and it also seems that all of my cylinders are running a little rich anyone?