Here's the story of whats going on with my 92si. I had a Transmission mess up on me so I took it to a local shop and they changed it after it came back it had a yeird sound while maintaining a speed like a wine. and when i went up the street a few days ago and it shut off on me and started pouring smoke from under the hood, when ifinally got it to re-start it is knocking rather loudly. any ideas of what it could be? sorry for the long post.