Ok, question now is why would it blacken right back up? I did a couple google questions and think it's too much gas in the combustion chambers. But what's a fix for this one? I have no cel or any other problems really. I do "think" I'm not getting the best gas mileage, but most people say the speed isn't known for the mpg's, so didn't think anything of it...
Makes me wonder if the car is meant to run rich to protect itself. Right? Rather have it run rich then lean and burn up the engine, no?