Rattling noise from engine.

Jatran661 · 07-25-2011, 11:37 PM

Hey guys just got a 2012 135i and im hearing some weird rattling noise during idle after a cold start. Brought it in to the dealer and they said they couldnt hear anything. Any help would be appreciated! Thanks! (the noise is not the fuel injectors firing)

Jatran661 · 07-25-2011, 11:40 PM

The dealer actually told me to leave it at the dealership for 2 nights so the engine can cool down. (WTH)? I have a big feeling they are going to rape my cars if I leave it there. I saw them floor a couple cars down the block from the dealership a few times. :'(

Eddie135 · 07-26-2011, 07:17 AM

Same here mate.

I did notice tha rattling sound upon cold start up but after the engine warms up, no problems at all.

I guess maybe the sound sound of Vanos = Valvetronic.

ozzie135i · 07-26-2011, 07:36 AM

Happens to mine too..

It goes away after you let it idle out.

Jatran661 · 07-26-2011, 11:57 AM

mines stays on during idle but it goes away after a long long drive. I wonder if this is normal.

Dackelone · 07-26-2011, 03:11 PM

Some of the rattling you hear is the Direct Injection (D.I.). It kind of sounds like knock or dieseling. It is NORMAL.

I noticed when I switched from Mobil-1 0w40 oil to German Castrol RS Edge 0w40, my engine ran a lot quieter (and cooler!), even when cold. But some noise is to be expected with the N54/N55 engines.

The other point of rattles can be your flywheel... IF you have a manual trans... and you have the car in neutral... you will hear the flywheel rattle some. This is also normal. Put your foot on the clutch and it goes away. This is teh dual mass flywheel springs rattling some.

Dackel

Jatran661 · 07-26-2011, 03:55 PM

I have dct. Ill try to record it or something to let you guys hear it.

Eddie135 · 07-26-2011, 07:17 PM

Mine's DCT as well.
Went around to ask a few authorise BMW workshop, they say the type of engine oil you are running will affect the rattling noise.

I am currently using BMW recommended 5W30 Castrol SLX professional Longtec LL01.

Might be too thin, will cause abit of noise.

Can I run any other approved oil to reduced the rattling noise.

Thanks.

Dackelone · 07-27-2011, 05:34 AM

Quote:

Originally Posted by Eddie135

Mine's DCT as well.
Went around to ask a few authorise BMW workshop, they say the type of engine oil you are running will affect the rattling noise.

I am currently using BMW recommended 5W30 Castrol SLX professional Longtec LL01.

Might be too thin, will cause abit of noise.

Can I run any other approved oil to reduced the rattling noise.

Thanks.

Try the oil that the dealers sell. ie the BMW oil. I know it is more expensive... but this is why I run Castrol RS Edge oil... because I decided to test it (coming from Mobil-1 oil) and it really made the engine a lot quieter.

There is a SW version that will make the engine quieter at idle, but it really kills the performance of the engine. Atleast that what I noticed.

here is a 200+ page thread on the SW versions...

http://www.e90post.com/forums/showth...7#post10101747

Change your engine oil to the BMW stuff and report back.

Dackel

Jatran661 · 08-14-2011, 01:36 AM

but i just bought it. the oil is still new.

anttmann · 08-14-2011, 04:12 PM

the rattle could also be the wastegate . because it sounds like the problem i was having its mainly at cold starts and can hear a lil at idle . the wastegate was rattling bad and its at bmw right now getting the turbo replaced because they are one unit

Dackelone · 08-14-2011, 04:42 PM

Are you sure it is not the fuel injectors? Direct injection makes A LOT of noise compared to other engine designs. Almost sounds like the engine has detonation (engine ping rattle) or a diesel when you rev it. Normal N54/N55 sounds.

anttmann · 08-14-2011, 05:03 PM

Quote:

Originally Posted by Dackelone

Are you sure it is not the fuel injectors? Direct injection makes A LOT of noise compared to other engine designs. Almost sounds like the engine has detonation (engine ping rattle) or a diesel when you rev it. Normal N54/N55 sounds.

they do make a good amount of noise but my dealer confirmed that there was a loud rattle coming from the wastegate and its a common problem on the n54

Dackelone · 08-14-2011, 05:13 PM

Quote:

Originally Posted by anttmann

they do make a good amount of noise but my dealer confirmed that there was a loud rattle coming from the wastegate and its a common problem on the n54

BEFORE you have your dealer try to repair that wastegate rattle you better read this (huge) thread on it...

Reply to thread 'Has anyone contacted BMW regarding 29.2 and lag?

http://www.e90post.com/forums/showthread.php?p=10205238#post10205238

BMW "repair" is more of a detune via new SW update. NO MECHANICAL REPAIRS. BMW used to replace both turbos but now they can get by with a detune SW "update".

anttmann · 08-14-2011, 05:22 PM

im familiar with this

and i asked about this i have been assured they will actually be replaced and not ''tempary fixed'' . im also good friends with my SA

Jatran661 · 08-14-2011, 07:23 PM

im 100% its not the fuel injectors. I hear it slightly iin the background of the fuel injectors noise.

gman36 · 09-10-2013, 12:55 AM

Quote:

Originally Posted by anttmann

they do make a good amount of noise but my dealer confirmed that there was a loud rattle coming from the wastegate and its a common problem on the n54

He has N55? I see you have one as well, did you get a new turbo because wastegate rattle?

07-25-2011, 11:37 PM	#1
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	Rattling noise from engine. Hey guys just got a 2012 135i and im hearing some weird rattling noise during idle after a cold start. Brought it in to the dealer and they said they couldnt hear anything. Any help would be appreciated! Thanks! (the noise is not the fuel injectors firing)
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07-25-2011, 11:40 PM	#2
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	The dealer actually told me to leave it at the dealership for 2 nights so the engine can cool down. (WTH)? I have a big feeling they are going to rape my cars if I leave it there. I saw them floor a couple cars down the block from the dealership a few times. :'(
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07-26-2011, 07:17 AM	#3
Eddie135 N55 Commando 55 Rep 797 Posts Drives: 135i - DCT - N55 Join Date: Jul 2011 Location: Melbourne iTrader: (0)	Hi Same here mate. I did notice tha rattling sound upon cold start up but after the engine warms up, no problems at all. I guess maybe the sound sound of Vanos = Valvetronic.
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07-26-2011, 07:36 AM	#4
ozzie135i Private First Class 20 Rep 178 Posts Drives: 135i Join Date: Dec 2010 Location: Australia iTrader: (0)	Happens to mine too.. It goes away after you let it idle out.
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07-26-2011, 11:57 AM	#5
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	mines stays on during idle but it goes away after a long long drive. I wonder if this is normal.
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07-26-2011, 03:11 PM	#6
Dackelone European Editor 10591 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	Some of the rattling you hear is the Direct Injection (D.I.). It kind of sounds like knock or dieseling. It is NORMAL. I noticed when I switched from Mobil-1 0w40 oil to German Castrol RS Edge 0w40, my engine ran a lot quieter (and cooler!), even when cold. But some noise is to be expected with the N54/N55 engines. The other point of rattles can be your flywheel... IF you have a manual trans... and you have the car in neutral... you will hear the flywheel rattle some. This is also normal. Put your foot on the clutch and it goes away. This is teh dual mass flywheel springs rattling some. Dackel
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07-26-2011, 03:55 PM	#7
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	I have dct. Ill try to record it or something to let you guys hear it.
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07-26-2011, 07:17 PM	#8
Eddie135 N55 Commando 55 Rep 797 Posts Drives: 135i - DCT - N55 Join Date: Jul 2011 Location: Melbourne iTrader: (0)	Mine's DCT as well. Went around to ask a few authorise BMW workshop, they say the type of engine oil you are running will affect the rattling noise. I am currently using BMW recommended 5W30 Castrol SLX professional Longtec LL01. Might be too thin, will cause abit of noise. Can I run any other approved oil to reduced the rattling noise. Thanks.
	Appreciate 0 Quote

08-14-2011, 01:36 AM	#10
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	but i just bought it. the oil is still new.
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08-14-2011, 04:12 PM	#11
anttmann Lieutenant 86 Rep 465 Posts Drives: 18' CQM M3 Join Date: Apr 2011 Location: Los Angeles , CA iTrader: (4)	the rattle could also be the wastegate . because it sounds like the problem i was having its mainly at cold starts and can hear a lil at idle . the wastegate was rattling bad and its at bmw right now getting the turbo replaced because they are one unit __________________ Current: 18' F80 M3 \|Champagne Quartz Metallic/Amaro Brown \|ZCP / Exec 6MT Past: 09' E82 135i Alpine White/Coral Red \|CCW'D/Caged 6MT Antoine Spignardo
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08-14-2011, 04:42 PM	#12
Dackelone European Editor 10591 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	Are you sure it is not the fuel injectors? Direct injection makes A LOT of noise compared to other engine designs. Almost sounds like the engine has detonation (engine ping rattle) or a diesel when you rev it. Normal N54/N55 sounds.
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08-14-2011, 05:22 PM	#15
anttmann Lieutenant 86 Rep 465 Posts Drives: 18' CQM M3 Join Date: Apr 2011 Location: Los Angeles , CA iTrader: (4)	im familiar with this and i asked about this i have been assured they will actually be replaced and not ''tempary fixed'' . im also good friends with my SA __________________ Current: 18' F80 M3 \|Champagne Quartz Metallic/Amaro Brown \|ZCP / Exec 6MT Past: 09' E82 135i Alpine White/Coral Red \|CCW'D/Caged 6MT Antoine Spignardo
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08-14-2011, 07:23 PM	#16
Jatran661 Second Lieutenant 10 Rep 251 Posts Drives: Jet Black 135i Join Date: Jun 2011 Location: Bay Area, California iTrader: (1)	im 100% its not the fuel injectors. I hear it slightly iin the background of the fuel injectors noise.
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