I puled the plugs on the Civic this weekend to give them a look, see how everything is cooking. Now a while back when I hit the track, I poped in a bottle of NOS octane booster which left my plugs nice n' orangey, no problem, but when I looked at the plugs this weekend, they still had a bit of that stuff on there, and it's been a month or more. Also, it wasn't that bright redish/orange anymore, but like a very very dark red, almost chocolate brown color. I know I've been running rich latley, but the real question is, should that stuff permanently discolor the plug or is something going on in there? This happen to anybody else? The plugs were dry and I'm not consuming oil, so that's not it.. anything else?

 

on a side question....did that NOS octane booster work? what were you safely able to up the boost to?

 

you can get an engine cleaning from your local garage. If it is just build up, is will get rid of it... It is called "Black Panther" or something and it cost about 80 bucks for the treatment here in Chicago.