Running Rich

[ViPER1313]

I'm not worried about the ceramic color - the whitish is probably due to the fact the old O2 sensors were throwing a lean code. I'm worried about the thick black soot that is coating the surrounding metal. I'm just beginning to think I can't expect better mileage in H-Burg, even though I don't drive it that hard around town (I get 300+ miles to the tank while driving on the highway). Must be the short driving cycles and cold weather .