rod noise on youtube video...Good or bad?

TX · 05-27-2020, 03:02 AM

he posts this video saying this sounds normal. He changed to new bearings and it sounds just like this...
I stumbled across this.... To me this does not sound normal. Advice all? As this sounds like I would expect bearing problems to sound like.

Not my video -- full disclaimer.

Helmsman · 05-27-2020, 04:19 AM

Can't say i hear any bearing knock. The slight clack in the background doesn't sound like what we've heard when it has turned out to be rod knock.

timothy2001 · 05-27-2020, 04:43 AM

Agree with Helmsman I am no expert but in my experience lower engine knock is a much deeper tone. This sounds more like an upper engine noise to me.

roastbeef · 05-27-2020, 06:31 AM

call my crazy, but if rod bearings are making noise you can hear from inside the car like that, the motor is toast.

Eja144 · 05-27-2020, 08:43 PM

Doesn't sound like bottom end at all. The "click click" sound seems pretty common and is usually chalked up to noisy lifters, though I don't know whether that's been confirmed as the only cause of clicky S65.

bmwpower603 · 05-27-2020, 09:27 PM

That’s ignition related.

If your alternator or battery is on its way it. It will also cause the idle clicking from plugs/ coils to be even more pronounced.

TX · 05-28-2020, 02:39 AM

Quote:

Originally Posted by roastbeef

call my crazy, but if rod bearings are making noise you can hear from inside the car like that, the motor is toast.

I'm going to agree here. The very rhythmic "tick...tick...tick...tick" valve lifters probably.... is a normal sound of these engines. I was referring to the deeper almost random "clack....clack,clack........clack,clack" that is heard during the first idle and again at the 1000-1500rpm range. That to me is not normal. It was very easy to hear and I'm not sure why others didn't pick up on it like you did. Perhaps it's speaker related to the way they are watching it?

SkiFly01 · 05-28-2020, 11:52 AM

This is what rod knock sounds like, waaay different.

https://youtu.be/yckDcrzj1ws

Scrippy · 05-28-2020, 09:57 PM

There is a deeper noise present than a tick. I have no idea what the cause is but it is well beyond that common tick. Something does sound unattractive about that idle.

Hudson55 · 07-13-2023, 02:30 AM

Quote:

Originally Posted by Scrippy

There is a deeper noise present than a tick. I have no idea what the cause is but it is well beyond that common tick. Something does sound unattractive about that idle.

It seems like there is a more prominent and concerning noise beyond the usual ticking sound. Identifying the source can be challenging, but the idle does indeed seem unattractive due to this unusual noise.

amrazM · 07-13-2023, 05:16 AM

these engines are inherently noisy beasts, if you had a rod knock you would know. that noise in the video is from a vanos actuator.

05-27-2020, 03:02 AM	#1
TX Captain 366 Rep 860 Posts Drives: 2009 ///M3 E92 APW 6MT Join Date: Dec 2010 Location: South FL iTrader: (0)	rod noise on youtube video...Good or bad? he posts this video saying this sounds normal. He changed to new bearings and it sounds just like this... I stumbled across this.... To me this does not sound normal. Advice all? As this sounds like I would expect bearing problems to sound like. Not my video -- full disclaimer. __________________
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05-27-2020, 04:19 AM	#2
Helmsman Major General 4465 Rep 7,109 Posts Drives: 2011 AW E90 M3 ZCP Join Date: Mar 2014 Location: Stockholm, Sweden iTrader: (0)	Can't say i hear any bearing knock. The slight clack in the background doesn't sound like what we've heard when it has turned out to be rod knock.
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05-27-2020, 04:43 AM	#3
timothy2001 Major 849 Rep 1,180 Posts Drives: 2011 E92 M3 6MT ZCP Join Date: Oct 2014 Location: NE Florida iTrader: (0) Garage List 2011 M3 E92 [0.00]	Agree with Helmsman I am no expert but in my experience lower engine knock is a much deeper tone. This sounds more like an upper engine noise to me.
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05-27-2020, 06:31 AM	#4
roastbeef Lieutenant General 11585 Rep 12,725 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	call my crazy, but if rod bearings are making noise you can hear from inside the car like that, the motor is toast. __________________ Instagram; @roastbeefmike
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05-27-2020, 08:43 PM	#5
Eja144 Second Lieutenant 303 Rep 298 Posts Drives: 2008 E90 M3 Join Date: Jun 2019 Location: Long Island, NY iTrader: (0)	Doesn't sound like bottom end at all. The "click click" sound seems pretty common and is usually chalked up to noisy lifters, though I don't know whether that's been confirmed as the only cause of clicky S65.
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05-27-2020, 09:27 PM	#6
bmwpower603 Lieutenant 203 Rep 486 Posts Drives: E36 m3 coupe 08 e90 M3 Join Date: Oct 2018 Location: New Hampshire iTrader: (0)	That’s ignition related. If your alternator or battery is on its way it. It will also cause the idle clicking from plugs/ coils to be even more pronounced.
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05-28-2020, 11:52 AM	#8
SkiFly01 Private First Class 102 Rep 142 Posts Drives: '11 M3 comp pkg Join Date: Jun 2018 Location: Bay Area iTrader: (1)	This is what rod knock sounds like, waaay different. https://youtu.be/yckDcrzj1ws __________________ -Kai
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05-28-2020, 09:57 PM	#9
Scrippy Lord Scrip 1812 Rep 3,013 Posts Drives: 2011 M3 Coupe Join Date: Jan 2012 Location: LA,Ca iTrader: (0) Garage List [0.00] 2007 BMW 335i [0.00]	There is a deeper noise present than a tick. I have no idea what the cause is but it is well beyond that common tick. Something does sound unattractive about that idle. __________________
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07-13-2023, 05:16 AM	#11
amrazM mTekMods 2139 Rep 2,899 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	these engines are inherently noisy beasts, if you had a rod knock you would know. that noise in the video is from a vanos actuator. __________________ 2011 Frozen Black/Fox Red E90 M3 650+WHP G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5
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