Almost 180 miles on these plugs.
Regular gas this time, not Premium.Thought I'd take a look.
These are looking ALOT better. Perhaps the rings are finally settling in? Oil consumption is down, too.
Before, 1/2 to 3/4 of the window would 'show' after about 200 miles.
This time, it was down by about a tad.. maybe 3 to 4 mm's.
Plug 4 looks and 6 look a tad lean now?Will pull tank and look for boot leaks.
Agreed. For a carburetted engine, too lean. Especially 3,4 and 6 showing white ash on the ground electrode. If it was an EFI, it's manageable through programming to run that close to lean best mixture and not burn holes in the pistons. I'd work on getting closer to ash brown. Just a safer color to attain.