I have a new 2013 Ford Edge Limited. It only has 5500 miles on it. My husband use to build cars. We both noticed the knocking the same time about a few weeks ago. It is very loud when the engine is cold and then it fades after a few minuets. Although it is still slight. I also noticed a small cloud of smoke this morning at start up. I will video tape the start up tomorrow to show the dealership. Because by the time I take it down there it will be gone. ...Keep you posted...this doesn't seem like a good thing.
