Bmw 320d 2008 - n47 engine

aydan9879 · 05-12-2019, 07:26 AM

Hi everyone

Just looking for some advice, I’ve recorded a video of my BMW 2008 320d engine. Does this sound like the chain needs replaced?

MrSweet1991 · 05-13-2019, 03:48 AM

Quote:

Originally Posted by aydan9879

Hi everyone

Just looking for some advice, I’ve recorded a video of my BMW 2008 320d engine. Does this sound like the chain needs replaced?

Does sound like a loose chain, but maybe you could narrow it down by using screwdriver, placing it in different places where the chain would be and see if you can hear it better?

criscarp · 05-13-2019, 07:17 AM

Does sound a bit chainy but that is located at the rear of the engine.

Is the noise actually coming from the AC pump the area you have filmed? If so I would check your AC pump bearing+clutch, vibration damper, pulley bearings etc first.

Can not really tell by the video.

Tambohamilton · 05-14-2019, 05:20 PM

It might be, but doesn't sound like chains to me. Like others have said, chains are at the back of this engine, so if the noise is from the front then anything attached to your serpentine belt is suspect.

Does the noise change with revs, other than following the speed of the engine? Chains tend to have a speed where they sound worst (about 1600rpm on my better half's n47).

05-12-2019, 07:26 AM	#1
aydan9879 New Member 2 Rep 13 Posts Drives: BMW E90 Join Date: Dec 2016 Location: UK iTrader: (0)	Bmw 320d 2008 - n47 engine - video Hi everyone Just looking for some advice, I’ve recorded a video of my BMW 2008 320d engine. Does this sound like the chain needs replaced?
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05-13-2019, 07:17 AM	#3
criscarp Private 4 Rep 83 Posts Drives: BMW E91 320D Join Date: Mar 2019 Location: Neath, UK iTrader: (0)	Does sound a bit chainy but that is located at the rear of the engine. Is the noise actually coming from the AC pump the area you have filmed? If so I would check your AC pump bearing+clutch, vibration damper, pulley bearings etc first. Can not really tell by the video.
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05-14-2019, 05:20 PM	#4
Tambohamilton Brigadier General 3058 Rep 3,909 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	It might be, but doesn't sound like chains to me. Like others have said, chains are at the back of this engine, so if the noise is from the front then anything attached to your serpentine belt is suspect. Does the noise change with revs, other than following the speed of the engine? Chains tend to have a speed where they sound worst (about 1600rpm on my better half's n47).
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