335 Cold Start-up: Engine Making knocking noise

E9TOU · 10-19-2012, 11:45 AM

Apologies as I assume this topic has been covered numerous times.

I started up my car this morning and noticed a very pronounced knocking noise coming from my engine. My steering wheel and shifter were vibrating much more than usual and soon after, the service engine light came on. Just trying to figure out if this is normal and what the cause is if it isn't? Definitely doesn't seem normal. I drove to car for a block, turned it off then turned it on again after a few minutes and the problem seemed to go away and the engine light disappeared.

I uploaded a video to youtube to show you guys what I'm talking about.

tphss · 10-19-2012, 11:53 AM

That sounds pretty bad. I see you have a 2010, why don't you have the dealer take a look?

E9TOU · 10-19-2012, 11:54 AM

Yeah, I already scheduled an appointment. Their service dept won't be available until next Tuesday.

LegendGary · 10-19-2012, 12:54 PM

That sounds like my car when I had misfire. But I own a N52 I'm not sure if it could be the same issue with the N54.

techwhiz · 10-19-2012, 01:07 PM

My car would shake and sound like a truck on start up in the morning with a leaky/bad injector.

E9TOU · 10-19-2012, 01:53 PM

I will let you guys know the outcome. Crossing my fingers that it isn't something major.

point665 · 10-19-2012, 01:58 PM

Woah... I was just coming here to post about this same exact thing.

Yesterday I was the last one to leave the office so I closed up the gates (parked my car past them so I could physically lock them). I don't usually have my car idling where I am outside of it, so maybe this is not the first time its happening... anyways I heard what I could best describe as a knock - it would go away and then come back after a few seconds... almost sounded like a classic V8 that was making one last "lope" before stalling.

Edit: Found this http://www.e90post.com/forums/showthread.php?t=667559 - also, my noise did not sound very bad, just abnormal for it to keep...

nikhil.thakur · 09-17-2014, 03:52 PM

I am having the exact same problem. Do you remember what happned to you car back then?

Neckbreaker · 09-17-2014, 04:10 PM

check this out, http://www.rtsauto.com/bmw-e90-valve...ter-ticknoise/

E9TOU · 09-17-2014, 04:40 PM

It was the fuel injectors and spark plugs. The injectors were dirty and clogged, and the spark plugs needed to be replaced (i forgot which cylinders exactly). All spark plugs and injectors were replaced under warranty and the car has been running fine ever since.

Miller335 · 09-17-2014, 05:09 PM

Do you have a 6MT OP?

It sounded like a miss and when it misses the DMFW makes noises like that.

E9TOU · 09-17-2014, 05:56 PM

Quote:

Originally Posted by Miller335

Do you have a 6MT OP?

It sounded like a miss and when it misses the DMFW makes noises like that.

Yeah I do, but what's a miss? And what's a DMFW? If you're saying I miss-shifted, then no I don't believe I did.

Miller335 · 09-17-2014, 07:49 PM

Misfire. When the engines not running right like in the vid.

DMFW means dual mass flywheel.

10-19-2012, 11:45 AM	#1
E9TOU Captain 232 Rep 642 Posts Drives: 2010 E92 335i Join Date: Apr 2008 Location: Goleta, CA iTrader: (2) Garage List 2010 BMW E92 335 [8.00]	335 Cold Start-up: Engine Making knocking noise Apologies as I assume this topic has been covered numerous times. I started up my car this morning and noticed a very pronounced knocking noise coming from my engine. My steering wheel and shifter were vibrating much more than usual and soon after, the service engine light came on. Just trying to figure out if this is normal and what the cause is if it isn't? Definitely doesn't seem normal. I drove to car for a block, turned it off then turned it on again after a few minutes and the problem seemed to go away and the engine light disappeared. I uploaded a video to youtube to show you guys what I'm talking about.
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10-19-2012, 11:53 AM	#2
tphss das Eichhörnchen 45 Rep 279 Posts Drives: e92 M3, F32 435xi Join Date: Oct 2012 Location: Florida iTrader: (0)	That sounds pretty bad. I see you have a 2010, why don't you have the dealer take a look?
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10-19-2012, 11:54 AM	#3
E9TOU Captain 232 Rep 642 Posts Drives: 2010 E92 335i Join Date: Apr 2008 Location: Goleta, CA iTrader: (2) Garage List 2010 BMW E92 335 [8.00]	Yeah, I already scheduled an appointment. Their service dept won't be available until next Tuesday.
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10-19-2012, 12:54 PM	#4
LegendGary Private 0 Rep 72 Posts Drives: Slow E90 Join Date: Feb 2012 Location: Hillsboro, OR iTrader: (1)	That sounds like my car when I had misfire. But I own a N52 I'm not sure if it could be the same issue with the N54. __________________ 06 E90 325i, Arctic Metallic, Matte Black kidney grills.
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10-19-2012, 01:07 PM	#5
techwhiz Colonel 453 Rep 2,973 Posts Drives: e90 335i Sedan - Arctic Join Date: Feb 2012 Location: Bay Area, Ca iTrader: (4)	My car would shake and sound like a truck on start up in the morning with a leaky/bad injector.
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10-19-2012, 01:53 PM	#6
E9TOU Captain 232 Rep 642 Posts Drives: 2010 E92 335i Join Date: Apr 2008 Location: Goleta, CA iTrader: (2) Garage List 2010 BMW E92 335 [8.00]	I will let you guys know the outcome. Crossing my fingers that it isn't something major.
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10-19-2012, 01:58 PM	#7
point665 Private 2 Rep 82 Posts Drives: 2008 335i Sedan Join Date: Feb 2012 Location: S. FL iTrader: (0)	Woah... I was just coming here to post about this same exact thing. Yesterday I was the last one to leave the office so I closed up the gates (parked my car past them so I could physically lock them). I don't usually have my car idling where I am outside of it, so maybe this is not the first time its happening... anyways I heard what I could best describe as a knock - it would go away and then come back after a few seconds... almost sounded like a classic V8 that was making one last "lope" before stalling. Edit: Found this http://www.e90post.com/forums/showthread.php?t=667559 - also, my noise did not sound very bad, just abnormal for it to keep... Last edited by point665; 10-19-2012 at 02:05 PM..
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09-17-2014, 03:52 PM	#8
nikhil.thakur Registered 0 Rep 3 Posts Drives: E93 335i Convertible Join Date: Feb 2014 Location: Ann Arbor iTrader: (0) Garage List 2007 335 [0.00]	I am having the exact same problem. Do you remember what happned to you car back then? __________________ Nik
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09-17-2014, 04:10 PM	#9
Neckbreaker Private 3 Rep 99 Posts Drives: E90 Join Date: Sep 2013 Location: Boca Raton, Florida iTrader: (0)	check this out, http://www.rtsauto.com/bmw-e90-valve...ter-ticknoise/
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09-17-2014, 04:40 PM	#10
E9TOU Captain 232 Rep 642 Posts Drives: 2010 E92 335i Join Date: Apr 2008 Location: Goleta, CA iTrader: (2) Garage List 2010 BMW E92 335 [8.00]	It was the fuel injectors and spark plugs. The injectors were dirty and clogged, and the spark plugs needed to be replaced (i forgot which cylinders exactly). All spark plugs and injectors were replaced under warranty and the car has been running fine ever since.
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09-17-2014, 05:09 PM	#11
Miller335 Colonel 291 Rep 2,189 Posts Drives: 2007 E92 Join Date: Oct 2013 Location: Portland, OR iTrader: (0)	Do you have a 6MT OP? It sounded like a miss and when it misses the DMFW makes noises like that.
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09-17-2014, 07:49 PM	#13
Miller335 Colonel 291 Rep 2,189 Posts Drives: 2007 E92 Join Date: Oct 2013 Location: Portland, OR iTrader: (0)	Misfire. When the engines not running right like in the vid. DMFW means dual mass flywheel.
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