No oil on plugs so I would say no oil issues. I like the Autolite 3922 plugs. Perfect heat range. I'm not sure but those look like 3923 since the ceramic is exposed a little but that could be the picture. Looks a tiny bit lean on the plugs but could be they are too hot of a plug or not enough run time. Make sure AFR is 11.5 or lower during boost runs. Piston tops look good on clear picture, blurry picture could just be a piston that got hit with gas before you pulled the plug. Oil will not dry up so if that drys it is not oil.
Your plugs show no issues with oil so I doubt you are burning any oil on this set of plugs. Also if you only did a few pulls and your AFR is 11.5 or close then leave it since the Autolite plugs take some time to show the tan color.
Looks good so far but just ensure 11.5 AFR during boost and plug heat 3922 Autolite or similar heat on your brand, you want that eletrode hidden in the spark plug for protection during boost. |