If I remember correctly, Haynes manuals have a page of colour photos of
spark plugs in various states, lean to oily.
On Monday, July 5, 2004, at 10:00  PM, Automatic digest processor wrote:

> From:    Michael Rule <mikerule@UFL.EDU>
> Subject: Re: Hmmm... sparkplug conditions for the beginner
>
> 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