The title says it all, it started around Wednesday of this week. The noise is a constant tick, but it goes away after a while. It sounds like it's coming from the headers, so I was thinking maybe an exhaust leak, but I don't smell any real heavy fumes. If the car sits idle, I can hear it and it gets louder when I accelerate. But like I said after I park, and crank it back up, I don't hear it anymore. Any comments/suggestions/advice are well welcome. Thanks in advance.