1996 cobra stuttering on acceleration

4.6 dohc 32v 57,000miles
new plugs,new air filter, new oil filter, new fuel filter
obd2 say miss in cylinder 4.
OBD2 says everything else in spec.
Have not replaced wires but I checked them and they are in spec. Wire 4
reads ~12000ohms.
Anybody ever check there wires to see what the resistance is?
Don't want to spend $130.00 on wires if they are OK.
I may have a bad exhaust valve too don't know yet.
I do excellent maintenence on the engine but I do drive it hard.