The correct way is to run the engine at speed, shut off the engine and coast to a stop. Now you can read the plugs. remember that when you pull a plug out, pull one at a time & don't mix it w/ another cylinder.

see:
http://www.strappe.com/plugs.html
http://www.dragstuff.com/techarticles/reading-spark-plugs.html
http://www.eric-gorr.com/techarticles/sparkplugs.html

http://racingsecrets.com/spark_plug_reading.shtml

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
Every Shaver | Now Can Snore | Six More Minutes | Than Before ... | Half A Pound for Half a Dollar | Spread On Thin | Above the Collar || BURMA-SHAVE