Engine miss only when warm at idle

[mottabam]

1993 240sx convertible 136k miles all original no mods I'm the only owner. Car developed a miss only after warm up and only when idling or at a stop. Drives fine otherwise. Engine rpms go down and a slight shake and slight exhaust sputter. Have replaced plugs, cap, rotor, wires, intake manifold gasket. Checked MAF, Injectors, Motor mounts, EGR valve all fine, compression is normal. Still same thing. Cold start runs fine, once warm the miss at idle. Any help is appreciated, about to throw in the towel.

[mexicanracer03]

what about your ignition Coil ??

[mottabam]

ignition coil is fine according to my tech. I did notice if I pull the injector plugs off 1 at a time the first one has less response for some reason. Engine does get somewhat sluggish but a bit less than the other 3 injectors. Might be clogged? Really getting frustrating.

[mexicanracer03]

ignition coil is fine according to my tech. I did notice if I pull the injector plugs off 1 at a time the first one has less response for some reason. Engine does get somewhat sluggish but a bit less than the other 3 injectors. Might be clogged? Really getting frustrating.

sounds like you said clogged or maybe it giveing out. I would change it and go from there