im wanting to see if my bike is running too lean or rich.. i read some where were you can run the bike and then look at the plugs to see what color they are... do you just drive the bike a few miles then pull the plugs to see color or is there more to this testing..

 

http://www.cyclespot.com/Jetting.html
http://www.dansmc.com/sparkplugs1.htm
http://www.dragstuff.com/techarticles/how-to-read-plugs.html