Something isn't right. Quit running it until you figure it out or you're going to cook that engine REAL quick! It sounds to me like you have an air leak and it's running over lean because of it. Do this: http://www.youtube.com/watch?v=epEGetU7NFU then do this: http://www.youtube.com/watch?v=6xwDy...eature=related

I hope this helps and you find your problem.