Changing your spark plugs is one of those automotive maintenance tasks that many people leave until there's a problem. But it's not difficult to do, and it doesn't take much time.
The noise you hear is not from gears grinding against each other, it's from the dog teeth on the gears. Learn why cars make noise when you shift gears poorly in this article. See more »
DIY Vehicle Care: Spark plug vs. Fuel economy, Part I. In this aritcle learn the differences between spark plugs and fuel economy. See more »