Metallic tapping 3k-4.5k under load

PorkchopExpress · 12-20-2014, 12:58 PM

Hi Guys,

I searched the forums and found a few threads alluding to this behavior, but none of the threads had a definitive cause of this behavior.

Car-
2009 BMW M3 w/DCT, 45,000 miles with a good bill of health

Essentially, I hear a metallic tapping coming from the engine compartment when the motor is under load between 3,000 to roughly 4,500 RPM (left rear). I've thrown a rod in a motorcycle, and this sound is very similar. That being said, I only hear it at that specific RPM range. I've driven some built LS cars that have a noisy top end, and I am pretty sure this isn't a noisy valvetrain.

The sound is louder if more load is placed on the car (such as going up a hill in 3rd-4th at those RPM ranges).

There is no loss of power (that isn't in my head

) and no codes are being thrown. Idle is smooth, and there's no stumbling in power delivery.

Is this a known harmonics issue that other people have noted, or do I need to go get my car checked?

TIA

///M Power-Belgium · 12-20-2014, 01:11 PM

Best thing is...
Stop driving your car, and take it ASAP to your BMW/dealer !
When it's another case of bearing failure you will damage the S65 even more .
Advice , Take no risks !

BobS · 12-20-2014, 01:13 PM

I would get it checked out, sounds like you have a issue. Make sure you report back with the findings.

radiantm3 · 12-20-2014, 03:00 PM

Sounds like bearings to me. I had the same symptoms and that was the case.

PorkchopExpress · 12-20-2014, 03:15 PM

Thanks guys, I have an apt scheduled for the 30th. I'll let you know what they find.

aajami · 12-20-2014, 03:43 PM

Quote:

Originally Posted by PorkchopExpress

Thanks guys, I have an apt scheduled for the 30th. I'll let you know what they find.

Do let us know what they say.

WingZeroX5 · 12-20-2014, 03:46 PM

Record a vid and post it

///M Power-Belgium · 12-20-2014, 04:12 PM

Quote:

Originally Posted by WingZeroX5

Record a vid and post it

No ! He may not drive this car anymore .No way !
At least if he don't wants to get a black hole in engine block ?!?!

Sebringjetta · 12-22-2014, 10:45 AM

so tired of hearing this stuff!!!! im getting paranoid everytime i start my car

s85e90 · 12-22-2014, 11:00 AM

Quote:

Originally Posted by Sebringjetta

so tired of hearing this stuff!!!! im getting paranoid everytime i start my car

Why? There's more cars running than not. You are only focused on threads that mention issues cause that's what people do.

I'm more tired of the hysteria. The e46 was worse and you don't hear people complaining now that most have well over 100k on them.

Amirsm3 · 12-22-2014, 11:05 AM

Quote:

Originally Posted by s85e90

Why? There's more cars running than not. You are only focused on threads that mention issues cause that's what people do.

I'm more tired of the hysteria. The e46 was worse and you don't hear people complaining now that most have well over 100k on them.

this. Even if 500 cars got hit with the issue (isn't the total production number 50k+ world wide?) then you're still at 1%.

I understand this *could* happen, but it's not gonna take away from me enjoying my roughly 50 thousand dollar purchase. It's in the back of my mind and I've acknowledged potential failure, but I'm not gonna let it ruin the experience.

Sebringjetta · 12-22-2014, 11:10 AM

Quote:

Originally Posted by s85e90

Why? There's more cars running than not. You are only focused on threads that mention issues cause that's what people do.

I'm more tired of the hysteria. The e46 was worse and you don't hear people complaining now that most have well over 100k on them.

ya but i always expected the VANOS to implode the motor on my e46... different when you are expecting it...

Amirsm3 · 12-22-2014, 11:19 AM

Quote:

Originally Posted by Sebringjetta

ya but i always expected the VANOS to implode the motor on my e46... different when you are expecting it...

did it actually happen, though?

Sebringjetta · 12-22-2014, 11:23 AM

Quote:

Originally Posted by Amirsm3

did it actually happen, though?

no but it happened to my good friend

trust me ill be tracking my e92 until something happens.. then ill fix it and start again..

Hujan · 12-22-2014, 11:27 AM

Amirsm3 · 12-22-2014, 11:32 AM

Quote:

Originally Posted by Sebringjetta

no but it happened to my good friend

trust me ill be tracking my e92 until something happens.. then ill fix it and start again..

I wish I lived closer to a track and had balls as big as yours to do it more often

But yeah, I love my E90. It's gonna get repaired one way or the other if something bad does happen.

Sebringjetta · 12-22-2014, 11:42 AM

Quote:

Originally Posted by Amirsm3

I wish I lived closer to a track and had balls as big as yours to do it more often

But yeah, I love my E90. It's gonna get repaired one way or the other if something bad does happen.

well im a sick individual as i think more about getting on the track each month more then i think about sex... just sayin

MFL · 12-22-2014, 02:58 PM

That means your engine wants to do launch control. Totally normal.

But really though, what do you expect from this forum without video or a sound clip? What other advice would you expect except for bringing it to the dealer for a union mandated hulk fist up your rectum?

Killerfish2012 · 12-22-2014, 09:26 PM

Guys give it a rest until he's gone to the stealership after christmas.

PorkchopExpress · 12-24-2014, 03:31 AM

Quote:

Originally Posted by MFL

That means your engine wants to do launch control. Totally normal.

But really though, what do you expect from this forum without video or a sound clip? What other advice would you expect except for bringing it to the dealer for a union mandated hulk fist up your rectum?

I was just curious if other's have heard of any harmonics issues through-out that RPM band, as other threads on this forum had indicated (but never confirmed).

If so, I would stop wondering what the sound was and just continue to drive the piss out of it.

Since it's obvious no one (including the mechanics I called) are aware of any specific harmonics under load in that range, then obviously I am taking my car in for a union mandated hulk fist up my rectum, as many have recommended.

Thank you for your contribution. /love "me"

thekurgan · 12-24-2014, 07:57 AM

Quote:

Originally Posted by PorkchopExpress

I was just curious if other's have heard of any harmonics issues through-out that RPM band, as other threads on this forum had indicated (but never confirmed).

If so, I would stop wondering what the sound was and just continue to drive the piss out of it.

Since it's obvious no one (including the mechanics I called) are aware of any specific harmonics under load in that range, then obviously I am taking my car in for a union mandated hulk fist up my rectum, as many have recommended.

Thank you for your contribution. /love "me"

There is a natural resonance around that rpm, but mostly heard through induction. This makes the foam filters sound much better whereas in many engines, they don't make much sound, just more dirt

USCTROJANSFIGHTON · 12-26-2014, 02:12 PM

Metallic tap/clunk/rattling under load is probably ROD BEARING

Metallic tap/clunk/ on initial cold start up is Normal.

12-20-2014, 12:58 PM	#1
PorkchopExpress Private 39 Rep 85 Posts Drives: 2018 BMW M3 Join Date: Jul 2014 Location: WA iTrader: (0)	Metallic tapping 3k-4.5k under load Hi Guys, I searched the forums and found a few threads alluding to this behavior, but none of the threads had a definitive cause of this behavior. Car- 2009 BMW M3 w/DCT, 45,000 miles with a good bill of health Essentially, I hear a metallic tapping coming from the engine compartment when the motor is under load between 3,000 to roughly 4,500 RPM (left rear). I've thrown a rod in a motorcycle, and this sound is very similar. That being said, I only hear it at that specific RPM range. I've driven some built LS cars that have a noisy top end, and I am pretty sure this isn't a noisy valvetrain. The sound is louder if more load is placed on the car (such as going up a hill in 3rd-4th at those RPM ranges). There is no loss of power (that isn't in my head ) and no codes are being thrown. Idle is smooth, and there's no stumbling in power delivery. Is this a known harmonics issue that other people have noted, or do I need to go get my car checked? TIA
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12-20-2014, 01:11 PM	#2
///M Power-Belgium General 63375 Rep 24,678 Posts Drives: ///M3-E92-DCT Silverstone II Join Date: Jul 2012 Location: Belgium iTrader: (0)	Best thing is... Stop driving your car, and take it ASAP to your BMW/dealer ! When it's another case of bearing failure you will damage the S65 even more . Advice , Take no risks ! __________________ "MAX VERSTAPPEN" IS THE 2021+2022+2023 F1 WORLD CHAMPION - #UnLeashTheLion BPM DEV-Tune & DCT Software-Tune & Servotronic & coding ///Alpine HID Angeleyes ///Oem.exhaust mod.
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12-20-2014, 01:13 PM	#3
BobS Colonel 97 Rep 2,002 Posts Drives: M3 Join Date: Feb 2009 Location: Southern NJ iTrader: (0)	I would get it checked out, sounds like you have a issue. Make sure you report back with the findings. __________________ ESS 650 ACM-R Upgrades
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12-20-2014, 03:00 PM	#4
radiantm3 Apex Everything! 976 Rep 4,378 Posts Drives: 2007 Honda S2000, 2017 GT350 Join Date: Sep 2008 Location: Cedar Park, TX iTrader: (6) Garage List 2011 E92 M3 [9.35] 2014 BMW i3 [10.00]	Sounds like bearings to me. I had the same symptoms and that was the case.
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12-20-2014, 03:15 PM	#5
PorkchopExpress Private 39 Rep 85 Posts Drives: 2018 BMW M3 Join Date: Jul 2014 Location: WA iTrader: (0)	Thanks guys, I have an apt scheduled for the 30th. I'll let you know what they find.
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12-20-2014, 03:46 PM	#7
WingZeroX5 Colonel 766 Rep 2,361 Posts Drives: F80 / F30 Join Date: Mar 2010 Location: New Hampshire iTrader: (14)	Record a vid and post it
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12-22-2014, 10:45 AM	#9
Sebringjetta Brigadier General 313 Rep 3,675 Posts Drives: E46m3 Join Date: Mar 2011 Location: Sacramento iTrader: (39)	so tired of hearing this stuff!!!! im getting paranoid everytime i start my car __________________
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12-22-2014, 11:27 AM	#15
Hujan Brigadier General 569 Rep 3,742 Posts Drives: M3 Join Date: Apr 2013 Location: . iTrader: (16)
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12-22-2014, 02:58 PM	#18
MFL Major 174 Rep 1,246 Posts Drives: E92 M3 Join Date: Sep 2013 Location: Bellevue, WA iTrader: (3) Garage List 2010 BMW M3 [9.00]	That means your engine wants to do launch control. Totally normal. But really though, what do you expect from this forum without video or a sound clip? What other advice would you expect except for bringing it to the dealer for a union mandated hulk fist up your rectum?
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12-22-2014, 09:26 PM	#19
Killerfish2012 Colonel 177 Rep 2,301 Posts Drives: E90 335I, E92 M3 Join Date: Feb 2012 Location: Midwest iTrader: (9)	Guys give it a rest until he's gone to the stealership after christmas. __________________ '07 335I w/ Mods '13 X1 Stock '11 X3 K&N
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12-26-2014, 02:12 PM	#22
USCTROJANSFIGHTON Second Lieutenant 24 Rep 217 Posts Drives: Car. Vrooom. Join Date: Sep 2012 Location: San Diego,VEGAS,IRVINE,LA,MOON iTrader: (1)	Metallic tap/clunk/rattling under load is probably ROD BEARING Metallic tap/clunk/ on initial cold start up is Normal.
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