EOE

Did my plugs because she started to misfire (audible ignition breakup) at higher load. Pulled the plugs which were all torqued great but the gap was way off from age. Both sets are NGK 2668 we all love.

Spark Plug closest to the firewall has an obvious early signs of overheating. Insulator surface is pure white, but no burning gasses deposits like in severely overheated plugs. Tip and ground looked ok.

I don’t believe excessive gap would cause overheating of the plug, would it?

I’m thinking injector and that cylinder running lean? Oh how I wish I had a WB on all four cylinders . Car runs great overall.