Hi, decided to track a noise coming from the engine, near the camshaft belt / water pump area. It is rpm depended and sounds like a rubbing sound between metals.
Timing belt with tensioner was replaced 3 years ago / 20000km, water pump was replaced 9 years ago.
What do you think? If you carefully listen at 00:36 it is more intense.
Link:
Does this sound like a failing water pump?
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DanTheMannn
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pump should always be replaced with belt, i'd change it anyway bud!
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BHadley
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Sounds like my old m40 318i...... So yep I'd say water pump, cured my noise and a nine year old pump is going to be tired. Easy enough to change once the fan blades are off, don't be surprised if the old pump has to broken with a hammer if its stubborn to remove
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paris
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Thanks for the replies! Will go ahead and replace the WP, for some odd reason since 1989 all of them have been failing between July/August
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paris
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Managed to get it out, somehow 
Bearings were shot, this is the 4th or 5th WP
Bearings were shot, this is the 4th or 5th WP
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BHadley
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Wow, quite worn! Has the noise gone with the new pump on?
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paris
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Yes it's gone, engine's quiet again. This one had a lot of play, I'm surprised it didn't ruin the fan / belts.