it looks to me like where no carbon is the piston tapped the electrode and either broken it off or smashed it.
and as you can see from the picture that piston is alot darker from the all gas not fireing just getting wasted
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i love AUTOZONE
MY CAR iS PROTECTED BY ZOOMBAK GPS LOCATOR IS YOURS?
175+served in engines built from minime to gsr/lsvtec,b16 b20vtec,d15 k24 powerhouses or just rebuilds.life is good
i like when people don't take my advice.cause then i make more money when u need it rebuild the right way!
how many speed holes do i need in my bumper,b4 i can run 15's?