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Scraping? sound at 1K RPM
#1
Hello,

I have discovered a new sound on my 1.6 HDi 110. Sounds almost like something is scraping, purring, or even airflow related? Really hard to describe, so here is a video…

https://youtu.be/b2Tx4TGJ4FU

Not really apparent at idle, just when holding at 1K rpm, and especially when revs coming down.

Would appreciate any pointers.

Thanks!
2009 B9 Multispace XTR 1.6 HDi 110 
Amdro Boot Jump Camper
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#2
That sounds horrific mate. Could be the water pump bearings, alternator bearing, something like that.

My money is on water pump.

Get a length of semi rigid plastic tube, put one end in your ear, then touch the other end to various bits. The loudest bit is the culprit.
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Current:
2017 B9 1.6 BlueHDi Van
______________________
Previous:
2012 B9 1.6 HDi Van
2008 M59 1.6 HDi Van
2003 M59 1.9D Van
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#3
Thanks Zion.

Water pump was replaced with the belt about 2 years/25k miles ago, so I’d hope it would last longer than that.

Alternator might be a good shout. Could be unrelated, and more to do with my installation skills/wiring, but my radio cut out briefly this afternoon too.

I’ll try your trick with the tube. Not like I’d know half the things I’d be placing it on!

Thanks again…
2009 B9 Multispace XTR 1.6 HDi 110 
Amdro Boot Jump Camper
Reply
#4
It works well, like a stethoscope. Put the end on the water pump casing, the cam cover, the alternator casing, see if anything stands out as louder than the rest.

Also check the gearbox casing, the clutch release bearing could be the culprit. It spins at engine speed whether in gear or not.
______________________
Current:
2017 B9 1.6 BlueHDi Van
______________________
Previous:
2012 B9 1.6 HDi Van
2008 M59 1.6 HDi Van
2003 M59 1.9D Van
Reply


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