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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Ticking sound OLD vs. NEW Threads



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      01-22-2013, 11:29 PM   #1
tmurphy2
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Ticking sound OLD vs. NEW Threads

Im not going to waste my time trying to describe it, here is a clip of the sound:

http://www.youtube.com/watch?feature...&v=XMuJmLmq2sA

so i read a lot of the threads and here is my question:

Pre 2010 Mr. 5 and others claimed this was a wastegate rattle issue that could be fixed by tightening an actuator but it was caused by a failing wastegate.

Post 2010 - everyone says this is normal and relax.

I dont know what changed or why but my car never used to do this, it also has new factory replaced turbos so wastegate doesnt seem likely as they are new.

Thoughts comments?
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      01-23-2013, 12:09 AM   #2
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Not wastegattle rattle . . .
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      01-23-2013, 02:15 AM   #3
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That doesn't sound anything like wastegate rattle. Neither does it sound anything like the noisy valvetrains BMWs often have. I'd definitely get that looked at.
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      01-23-2013, 12:16 PM   #4
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hmmm. pretty sure that mine sounds like that as well (gonna do a more careful sound check tonight). I assumed it was the normal 'ticking' noise these engines make...
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      01-23-2013, 12:59 PM   #5
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ya you guys are right its not wastegate, my friend who is a tech confirmed that so any other ideas?
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      01-23-2013, 01:01 PM   #6
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Our shop 335i has this same problem & has had it since 20k miles.

Could be the injectors opening/closing, valve tap, lifter tick, exhaust leak. Could be quite a few things. Most people don't notice it on their own car because they never have the hood open when the engine is on. I'm guessing the sound is consistent with RPM?

Last edited by Tiago@VRSF; 01-23-2013 at 01:13 PM.
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      01-23-2013, 01:05 PM   #7
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I searched on this awhile back and figured it was normal due to this thread:

http://www.1addicts.com/forums/showt...hlight=ticking

Though there is no video with the actual noise this guy was experiencing. Once I confirm my noise is the same (98% sure it is), maybe I will post in 1addicts and see what is said.
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      01-23-2013, 01:23 PM   #8
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Quote:
Originally Posted by Tiago@VRSF View Post
Our shop 335i has this same problem & has had it since 20k miles.

Could be the injectors opening/closing, valve tap, lifter tick, exhaust leak. Could be quite a few things. Most people don't notice it on their own car because they never have the hood open when the engine is on. I'm guessing the sound is consistent with RPM?
it only occurs at idle, so when the rpms go up or you rev it the sound stops, upon declining and returning to idle the sound will start again. car has new injectors but thats interetsing that your shop car has had this as well. you can hear the sound with the hood closed.
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      01-23-2013, 01:23 PM   #9
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Quote:
Originally Posted by foghat View Post
I searched on this awhile back and figured it was normal due to this thread:

http://www.1addicts.com/forums/showt...hlight=ticking

Though there is no video with the actual noise this guy was experiencing. Once I confirm my noise is the same (98% sure it is), maybe I will post in 1addicts and see what is said.
ya let me know what those guys come up with i just cant imagine this is normal because why would the car not do this for the past 5 years and just start now?
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      01-23-2013, 01:50 PM   #10
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Quote:
Originally Posted by Tiago@VRSF View Post
Our shop 335i has this same problem & has had it since 20k miles.
How many miles on it now?
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      01-23-2013, 01:55 PM   #11
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59k, been to the dealer 3-4 times for recalls and other small fixes and the sound never bothered them enough to do anything about.
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      01-23-2013, 02:08 PM   #12
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Quote:
Originally Posted by Tiago@VRSF View Post
59k, been to the dealer 3-4 times for recalls and other small fixes and the sound never bothered them enough to do anything about.
I'm kind of thinking it might be 'normal'. I noticed mine about 3 or so months ago. I need to pay closer attention - not sure if it always does it or just sometimes. I'm not sure if it was there when I had it at the dealer for my 'about to go out of warranty check'. If it was, they too did not say anything about it.

Either way, other than the noise, it does not appear to have caused any issues.
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      01-23-2013, 02:09 PM   #13
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Quote:
Originally Posted by tmurphy2 View Post
ya let me know what those guys come up with i just cant imagine this is normal because why would the car not do this for the past 5 years and just start now?
Maybe you should just post there as well (I'd do it in the general section) and save me the effort.
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      01-23-2013, 02:21 PM   #14
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Quote:
Originally Posted by Tiago@VRSF View Post
59k, been to the dealer 3-4 times for recalls and other small fixes and the sound never bothered them enough to do anything about.
hmmmmmm, so wierd, not convinced its probably over their heads or really tough to trouble shoot so they just say its normal. if it was normal could you imagine the sound of 5 bmw's next to each other? all you would hear is ticking hahaha.
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Last edited by tmurphy2; 01-23-2013 at 08:17 PM.
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      01-23-2013, 02:50 PM   #15
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Same issue here more noticeable on cold start to warm transition when the waste gate changes state.

Sounds like a valve tap or lifters. Dealer said normal but it started at about 26k miles. Under load its quite.
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      01-23-2013, 08:16 PM   #16
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It's not normal, mine started about a week ago. It doesn't do it all the time but when it does its at idle that I hear it. My has has 55k anyone have any idea on what it could be?
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      01-23-2013, 08:19 PM   #17
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Quote:
Originally Posted by spiderx4 View Post
It's not normal, mine started about a week ago. It doesn't do it all the time but when it does its at idle that I hear it. My has has 55k anyone have any idea on what it could be?
+1
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      01-23-2013, 08:23 PM   #18
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I've noticed it mostly when coming off the interstate and returning to idle. Goes away with the slightest tap of the throttle. Not really worried about it but would like to know what it is. Maybe someone with a stethoscope could narrow down the location.
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      01-23-2013, 11:25 PM   #19
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Quote:
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I've noticed it mostly when coming off the interstate and returning to idle. Goes away with the slightest tap of the throttle. Not really worried about it but would like to know what it is. Maybe someone with a stethoscope could narrow down the location.
+1 same thing here. It randomly happens. Car has gone several months without it, then it might happen twice in a week, then i wont hear it for another month or two. sometimes i haven't heard it in 5-6 months lol.
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      01-24-2013, 12:29 AM   #20
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mine started making a similar sound at idle after I got my DPs put on, but it's not as loud as yours
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      01-24-2013, 11:36 AM   #21
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throttle butterfly tick

valve tap


tick > tap


or, it could something electronic.
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      01-24-2013, 12:05 PM   #22
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Quote:
Originally Posted by mryakanisachoad View Post
throttle butterfly tick

valve tap


tick > tap


or, it could something electronic.
i had similar sound, it turned out to be my serpentine belt.
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