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In the last few month i have had this noise come up and maintained... one was definitely the water pump which i didn't suspect originally as i had changed it about a year ago... the ticking got progressively worse. Also i didn't expect that kind of ticking to come from the pump but sure enough it was. My mechanic diagnosed it straight away... problem solved. Though are engines are not the same in your video it looks like its local to that area.
 
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