Just wondering if it's normal that when i remove the wires(engine is running) from the plug while i'm pulling them out of the hole the fire is jumping I can see sparks going from the tip of the wire to t he metal of the valve cover(at night). I thought that they were supposed to be insulated and no fire should jump from them but then again maybe it's because i unplugged them and the volatage is high enough for this to happen. If anyone could tell me , i'm suspecting i have bad wires.

Thankx

1993 Accord