08 GU Engine Tick

[AB]

Hi all! Hate that my next post from greetings a while back is asking for advice, but here I am!

Got an CRD GU Patrol that decided it wasn't noisy enough since yesterday, adding an obviously problematic sound to its regular cacophony.

Video says a thousand words: https://youtu.be/t-dfQtAGSck

Seems to be front of block from the ear, is intermittent. Can rule out egr, alternator, turbo but theres not enough room to get my spanner stethoscope to anything else on the front. Any thoughts or advice?

My only thought from this is the chain.

Checked fan blade and the inside of radiator, manually span the blade to try and replicate the sound?


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