Background...this noise has been around a while. I know for at least a year or so. Here lately the cracked exhaust manifold was so loud it covered it up.
I just replaced that with an APN and it is SO MUCH QUIETER than it was. However, that old noise is back and annoying again.
It sounds like it is around cylinder #3 which is where I tried to keep my iPhone hovered over for most of the video. I don't think it is leaky exhaust seeing as how I just replaced the exhaust manifold haha.
YouTube - Jeep 4.0L Noise