http://www.aati.com.au/hirth/how_to_read_sparkplugs.htm
Try this site.
Stan Wilder
www.engineceramics.com
----- Original Message -----
From: "Marc Perdue" <marcperdue@ADELPHIA.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, July 05, 2004 6:29 PM
Subject: Re: Hmmm... sparkplug conditions for the beginner

> 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