94civicNewbie

I recently got new plugs, wires, distributor, cap, and rotor for my D16Z6. I pulled the plugs out and there is a black sooty type powder on them. The electrode doesnt look messed up. They are 1 range colder then stock and I have them gaped to 41. Should I size down the gap? Runnin rich? Motor prob? Any help is much appriciated. Thanks