"engine knock"?
 

Hey guys, i drive an 05 5.4l and i was driving home today and i heard this noise that sounded like a "knocking" in my opinion. I have a video of it, you might want to have some headphones and your volume turned up all the way.

https://www.youtube.com/watch?v=ZyWB...ature=youtu.be

any thoughts? it's kinda been there for a little, ever since i bought the truck, but it's just been another one of those things.

Didnt hear any "knocking".... can you catch it at idle with the hood up or anything? Seems like too much background noise in the video