Evaluate my plugs......

[LS2 KLR]

I just pulled my plugs and found some problems. Not long ago I accidentally put in 7 gallons of 87 octane. When I pulled my head out of my butt I stopped and filled the rest with 93. I then put in some octane booster. It didn't ride to well but I babied it until I went empty. Then today, my car got pretty hot. My temp gauge still read half way? I just installed a new radiator and was told I most likely have a bubble at my temp sender. Anyway, my plugs are pretty redish and the two on the top at the left are missing part of them as well as some porcelin. I am more concerned with the metal fragments causing me problems?

 

[white99gt]

Looks like it is had water on one plug ,and the other two missing parts ..Well it ran lean or det. on thoise two cylinders.

Better have the A/f checked ..As far as the missing parts.The only way to tell where they went is to boroscope the cylinder..

 

[LS2 KLR]

I just had it dynoed a couple of weeks ago and it looked fine. I guess it is possible that the few runs made could have caused this. It did ping with the mixed fuel unless I babied it around. If I knew how to pull a syphon, I would have. After swapping out my plugs it runs great. I'll give it a few days and pull them again. Thanks