https://youtube.com/shorts/M7m0g5ZfbAE?si=UoXAe_U_oymH4tEC

Hello,
I have already cracked each injector which made no difference.The air cleaner bracket is steady and not making any noise. The harmonic balancer appears to be tight and all. The vacuum pump is still workin. If it’s the timing chain or tensioner would the noise go away at higher RPM?Just put diesel in it last week when I changed the oil.

I posted a video of the noise on YouTube. The link is above, should be available.