Friends 1st gen Rx7 12a streetport premixed with super tech tcw3
 

He has been premixing like a mad man he just throws in w.e he recently got the car but he’s had these plugs for like a yeAr. A lot of people say it looks like a rich mixture . Some say it’s to much premixing? What you guys think ? .
https://cimg0.ibsrv.net/gimg/www.rx7...b9ee8acbc.jpeg

He recently got the car but had the plugs for a year? That doesn't parse for me. Anyway, it looks rich but if the second from the left and last plugs are from the leading, then its not too bad. If you over premix a lot you can get carbon buildup even with 2 cycle oil. Not enough info to really say.

Are you saying he had old plugs on the shelf and put them in his new to him car? Should have at least cleaned them before putting them in.

Yeh, um, what? If those plugs are old and used then you can't really "read" them. If they were clean when installed then either his fuel is too rich or he's pre-mixing like a madman.

If he has a working OMP then he doesnt need to pre-mix. If he removed the OMP then he should mix 1oz of pre-mix to 1 gallon of gas.

I bought it of a friend and he told em the plugs where there for a year and he was heavy on the premix I’ll start doing .5 a gallon from now on and off course I ain’t reinstall those plugs had them swapped out for some new ones.