need the link that has photos of spark plugs

[Cliff]

need the link that has photos of spark plugs in a progression from lean, through good all the way to rich.  I have searched but I quess I am not the "search Ninja" today,  giving up and begging for help.

TIA
Cliff

[9Ball]

go to ngk.com....they have pictures posted on their website.

http://ngk.com/sparkplug411.asp

[bassman]

Nuther one dat may be usefuli.....

http://www.4secondsflat.com/Spark_plug_reading.html

[Raverez]

Try this site.

http://www.autohausaz.com/html/spark-plugs_spark-plug-wires.html