Hey Scotty,
I have a 2017 honda accord ex-l v6 and I has been making a engine knocking like noise. It has no check engine light on and the oil still has around 70 percent life. Oil is not burning nor have I seen and fluid leaks anyway. I'm a guy that tries to keep up with the upkeep. I've seen some videos where it says it could be the tensioner pulley, idler pulley, or the belt. However I can't quite tell how to confirm it. It also seem the that the sound either goes away or is blocked by wind, when going 30+ miles per hour. Car has around 85k miles on it, please help.
If coming from the engine bay while idling use a mechanic's stethoscope to zero in on the source of the noise. Otherwise you can use a noise-finding device like the ones Scotty has demonstrated in his videos.
https://www.youtube.com/watch?v=Wy5nqh3LSs4
Was looking for what it could possibly be. But the video was informative as well
It could possibly be many things. You need to track down the source.