Spark plug

[Rnash2002]

Ok on going from my fuel issue,ive looked at my plugs and they all look ok,and nice ligh bronze colour.
Now if it was running lean on the rollers would the plugs be a lighter colour or would it not show up until running lean for a few hundred miles?

[flyingbrick]

This might help ya buddy...........

http://www.ngkntk.co.uk/working/RunScript.asp?sname=Firing+End&smenu=TechSpark_1&page=170&submenu=TechSpark&p=ASP\Pg170.asp