So again with this plug.. I definitely intend to move my timing from 35 back down to 33.. but again this white strap and relatively white clean insulator (lean) and the dark base circle (rich).. :BangHead:.. View attachment 1715480775
You are still petty fat at idle and cruise. See those black balls on the porcelain? That is from excess fuel building up on the inside of the shell. Then they blow off and land where they are.
