Rockers

[Jonathansmith68]

I have been having engine problems with my CJ5 with an amc 360 in it. I pulled the plugs and number 4 was way darker than the others. I pulled the valve covers off and noticed all the rockers were stamped with a 3 except the number 4 cylinder. It was stamped with a 7.
Anyone know what the 3 and 7 mean?

 

[gert]

I have been having engine problems with my CJ5 with an amc 360 in it. I pulled the plugs and number 4 was way darker than the others. I pulled the valve covers off and noticed all the rockers were stamped with a 3 except the number 4 cylinder. It was stamped with a 7.

Anyone know what the 3 and 7 mean?

I have no idea, but it sounds as if you are running richer on cylinder 4 for some reason


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