86 200 sx ca20e ignition missfire

got an 86 200sx with the old style cannister type coils. car has a terrible missfire. things checked; ign. module, coils, wires, cap, rotor, wiring etc. what am i missing?
it has all new wires cap and rotor. changed module, nothing changed. help!!!!!!! number on dist is 22100 24F00.

try ohming out your injectors if one them has too high resistance then that can cause a misfire i ran into that problem with a 300zx....

try ohming out your injectors if one them has too high resistance then that can cause a misfire i ran into that problem with a 300zx....
thanks , i'll try that...i've tried most everything else. did find one more possibility....ignition switch. thanks again!

You may just need to replace the spark plugs. It's an old car, so I would do it anyway. Let us know how it goes.