2002 kia optima 4 cyl po350 code ignition coil. is there a separate coil that feeds the coils at the spark plugs or are these the only ones? if so where is it located?

The coils at the plugs are the only ones, no other ignition coil. have you checked the system for trouble codes? if not get a cheap code reader and read the codes, then post them back here.

Those are the only ones,do you have voltage there, if so have you check your crankshaft sensor, that's what trigger the ignition coils to spark.

Po340 cercate A Bank1 single sencer