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Ebony and Ivory... 120-130 1967

Hello Oh Powerful and Wise Phil:

Maybe I was not clear enough but here is the situation:

Plug 1 - Black with traces of brown (a bit too rich)
Plug 2 - White with traces of brown (too lean)
Plug 3 - Black with traces of brown (a bit too rich)
Plug 4 - White with traces of brown (too lean)

All colors are uniform throughout the plug including the ceramic and both center and side electrodes.

Since plugs 1 and 3 do not share a carburetor or an exhaust manifold (nor do plugs 2 and 4) I do not think it has anything to do with that. Any other thoughts?

Cheers,

Jeff Pucillo






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