I am not a mechanic (electrical stuff by trade), but have always maintained / serviced my own vehicles myself where I am able. I have had the van for 12 months – 74K miles on the clock.
I noticed a strange noise first about 3 months ago, and it’s getting worse.
If I open up the engine compartment, I can’t really hear anything unusual. The noise is a sort of a warbling / bearing type noise (difficult to describe). Not usually noticeable from cold, but gets louder after a few miles.

This is what I have found.
Doesn’t seem to be manifold stud problem
There is some seepage from the inlet manifold of the black sludgy stuff.
Took the alternator belt off, there is a little bit of play in the water pump bearing (seems worse as you rotate the pulley a few degrees). But no water leaks from pump.
But a LOT of play in the air con belt adjuster pulley, is this normal?
Where can I get a new pulley from?
Any advice would be greatly appreciated.
Thanks in advance.
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I am beginning to think that the air con belt adjuster pulley is not the problem, as the bearing is held in just with a circlip, so probably will tend to float about to some extent - am I right?
