Spark Plugs are Ghost White - AFR's are good
#3
Cpt. Slow
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Plug looks good, maybe a tiny bit lean. You can only read what the engine's doing right when you shut the engine off. So if you were idling, that's your idle plug. If you do a WOT pull and shut it off, pull over, and check the plugs, they'll probably look a lot different. Give it a try.
To me, that looks like a ~14.7+ idle.
To me, that looks like a ~14.7+ idle.
#4
Unleaded gasoline runs very clean and E10 is cleaner. They will develop a little color over a longer period. If your timing is optimized you might see a few specs on the center ceramic but white to a very light tan is ok. You also want to look deeper into the shell not just at the projected part.
Last edited by LeoNA; 05-08-2020 at 02:00 PM.
#5
Plug looks good, maybe a tiny bit lean. You can only read what the engine's doing right when you shut the engine off. So if you were idling, that's your idle plug. If you do a WOT pull and shut it off, pull over, and check the plugs, they'll probably look a lot different. Give it a try.
To me, that looks like a ~14.7+ idle.
To me, that looks like a ~14.7+ idle.
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