I changed out all my plugs to 9's today.

The leading plugs (7s) were pretty darn black (which means i'm running rich)

The trailling plugs (9s) were the funny ones. They were half black, and half brown/tan. Any clue? It's as if someone drew a line in the middle and split the colors. I figure the black half was the one facing the leading plugs.

Anyone have a clue what this means?

Thanks for the help in advance.

Danny

 

Any ideas??

Danny

 

thats the same exact thing on mines although the previous owner was running 7's all around

 

black = rich

tan = normal

white = lean

 

Thanks for the info.

Then i guess i'm fine then... I was just wierded out that the trailling plugs were half normal half rich..

Danny