Weird, Weird problem...I pulled the #4 plug wire and slid the plug puller down the tube and it just spins when rotated. I shined my light down the tube and the hex nut is gone. The plug wire plastic connector had reddish brown discoloration. It's a '94 Accord EX 149K miles. I changed the plugs with NGK's last year @ about 132K with no problems. The wires have never been changed. The car still runs fine but I'm guessing this could a huge problem. Does anyone know what the source of the malfunction could be? Any clues on how to remove the plug? TIA. Carl