My engine began to have a slight rattle at idle. As I kept driving it got worse. Now when I start to come to a stop the rattling gets worse. After I got home I took the video and notice some smoke coming out. Can anyone tell me from the video what the culprit is? I hope its something loose if not it looks like I have to do do an engine swap. http://www.youtube.com/watch?v=IuDAwxdQrlo