Somebody posted a link to Bosch's site with these pictures just within
that last two weeks.  Ahh, found it:
http://www.boschusa.com/images/SparkPlugFaces.pdf

Marc Perdue

Michael Rule wrote:

> Hi Stan,
>
> For the sake of discussion- can you please define the look of a
> "lean-burn" sparkie?
>
> And really, no joke- does someone have this simple stuff posted?
> Or- if I find a photo, does someone have a spot where I can post a
> pic of sparkplug appearances/conditions/symptoms after being run
> in an engine?
>
> Cheers,
> MIker