DMF failing or is it? (video)

MarkoHF · 09-01-2019, 06:18 PM

I have a 325d but it has the same M57 engine which is why I am writing in this category. Last year my Dual Mass Flywheel failed, it suddenly started making loud noises when clutch was half pressed. So I changed it with an after market LUK flywheel and clutch. Surely the noise is gone, but I noticed that I can still hear it, it's so silent that I have to turn off the ventilation and radio in order to hear it. The noise is so low that it feels like a slight rpm change, but it's still there

Is this normal? Is the DMF suppose to make slight noises or is my new DMF going bad? Here is the vid I took:

MarkoHF · 09-03-2019, 05:47 AM

Nobody?

robnitro · 09-03-2019, 08:59 AM

Most of us here drive auto diesels. No manual bmw diesel in usa.
On my tdi I had rattle and decided to go smf with vr6 clutch. The dmf had some play but I compared to a new one a friend was installing on his, and it wasn't much difference. Maybe it will quiet down with use. My Smf was louder of course but other than that, I could barely tell a difference.

Nadir Point · 09-03-2019, 11:28 AM

My rule of thumb on mysterious noises in vehicles with diesel drivetrains is just drive on. Something will let go sooner or later if it's really anything to worry about.

335dlci · 09-03-2019, 04:15 PM

Quote:

Originally Posted by MarkoHF

I have a 325d but it has the same M57 engine which is why I am writing in this category. Last year my Dual Mass Flywheel failed, it suddenly started making loud noises when clutch was half pressed. So I changed it with an after market LUK flywheel and clutch. Surely the noise is gone, but I noticed that I can still hear it, it's so silent that I have to turn off the ventilation and radio in order to hear it. The noise is so low that it feels like a slight rpm change, but it's still there

Is this normal? Is the DMF suppose to make slight noises or is my new DMF going bad? Here is the vid I took:

Throw out bearings also make odd noises also.

Tambohamilton · 09-03-2019, 06:02 PM

The engine rpm will pick up by literally about 20rpm when you press the clutch. It masks a vibration which would occur with the clutch pressed. This is totally normal.

Disclaimer: I haven't watched your video...sorry.

09-01-2019, 06:18 PM	#1
MarkoHF New Member 3 Rep 16 Posts Drives: BMW 316i Join Date: May 2015 Location: Macedonia iTrader: (0)	DMF failing or is it? (video) I have a 325d but it has the same M57 engine which is why I am writing in this category. Last year my Dual Mass Flywheel failed, it suddenly started making loud noises when clutch was half pressed. So I changed it with an after market LUK flywheel and clutch. Surely the noise is gone, but I noticed that I can still hear it, it's so silent that I have to turn off the ventilation and radio in order to hear it. The noise is so low that it feels like a slight rpm change, but it's still there Is this normal? Is the DMF suppose to make slight noises or is my new DMF going bad? Here is the vid I took:
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09-03-2019, 05:47 AM	#2
MarkoHF New Member 3 Rep 16 Posts Drives: BMW 316i Join Date: May 2015 Location: Macedonia iTrader: (0)	Nobody?
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09-03-2019, 08:59 AM	#3
robnitro Captain 160 Rep 803 Posts Drives: x5 35d e70 2011 Join Date: Sep 2016 Location: NYC area iTrader: (0)	Most of us here drive auto diesels. No manual bmw diesel in usa. On my tdi I had rattle and decided to go smf with vr6 clutch. The dmf had some play but I compared to a new one a friend was installing on his, and it wasn't much difference. Maybe it will quiet down with use. My Smf was louder of course but other than that, I could barely tell a difference.
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09-03-2019, 11:28 AM	#4
Nadir Point Lieutenant 103 Rep 580 Posts Drives: Diesel Join Date: Dec 2015 Location: CO iTrader: (0)	My rule of thumb on mysterious noises in vehicles with diesel drivetrains is just drive on. Something will let go sooner or later if it's really anything to worry about.
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09-03-2019, 06:02 PM	#6
Tambohamilton Brigadier General 3060 Rep 3,912 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	The engine rpm will pick up by literally about 20rpm when you press the clutch. It masks a vibration which would occur with the clutch pressed. This is totally normal. Disclaimer: I haven't watched your video...sorry.
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