highstrungvega wrote:My initial thoughts are you are rich but have a real hot plug which is burning off all the residue off the tip. Put an emissions sniffer on it and check the hc's and nox. Hc is hydrocarbon (unburnt gas) nox reading us usually a hot/lean mix.
My initial thoughts was running rich under normal driving. Then leaning out under hard throttle.Me thinking thats where the small amount of pre ignition was coming from. It is really hard for me to tell from just looking at plugs the 1st time without knowing history of said plug. I can get my cars tuned in pretty good. Might take me a few days. After reading the web page I may been off a few miles..
