Well guys, I found out what that knock is. I have a cracked piston. My cylinder wall is also a bit damaged, so I am kinda screwed. My Intrepid will be sitting for a good amount of time until I can find a job to afford the rebuild. It's gonna cost me about $2000 for the rebuild and labor for removing/replacing the motor. It will be alot cheaper for me to fix my Lebaron, so I am going to do that first until I can save enough money for the 'Trep.