Plugs?
 

Hi All,
I am definitely still learning my way around the 8, so please bear with me...

I posted another thread about maintenance questions, and was advised to pull my plugs and check coils using an HEI tester. Nice strong spark, but what do you guys think of these plugs. The Leading is from rotor 2, and the trailing is from rotor 1. (sorry if the pictures are giant, still learning how to use the GUI with uploading things...) and before you ask, NO, that is not rust, it is just buildup...

https://cimg9.ibsrv.net/gimg/www.rx8...483aa922ac.jpg




https://cimg2.ibsrv.net/gimg/www.rx8...7589e0ba42.jpg

The brown is about normal color. The one that's black shows that rotor is running rich. Both look ok overall.

Thanks! still learning about the little details (such as this)... My dad thought the brown was rust.

If you just purchased the car would be good to get some new plugs. Get a set of NGK's. Should last roughly 15000 miles, maybe longer.

Look normal. The ring of the trailing plug will be dark, it's hidden from the flame front, since the whole plug sits in a pocket.