exactly (in every way) to this

 

 

sounds identical, goes away when warm, im not too bothered tbh its not lost a drop of oil and its soo clean..... the last reply was

 

'I did fix it it was the oil pump cavitating due to a faulty oil pickup tube'

 

wat?

 

:D

sounds like a bearing on one of the pulleys to me... have you tried using a pipe or tube to your ear and poking around with it, to see if you can narrow down where its coming from? watch your fingers tho!