Posted for Walter Atkinson <walter@advancedpilot.com>:

 Grayhawk:
 
 We hear a lot about lean misfire.  (As it is commonly referred to, I  really
don't think it exists.)  Would you be so kind as to define  what you mean by
lean misfire?  What is the phenomenon?  Also, do you  think it's the same
phenomenon as rich misfire?
 
 Thanks.
 
 Walter