Loud rattling sound(2013 x3 f25)

frogman27 · 09-28-2019, 09:29 AM

Hi.
First of all. I had problem with white smoke coming out from exhaust pipe and I got covered by warranty(turbo oil feed line).
But there is still rattling sound when I start engine.
And about my exhaust pipe, air coming out from one pipe only, the other pipe, very little amount air coming out. They are not same. is there any tip for fix it?

willywi · 09-28-2019, 10:41 PM

It's most likely turbo wastegate rattle

TheCoolX3 · 09-29-2019, 05:57 PM

Exhaust only coming out of one pipe is normal. There is a valve in the exhaust that opens and closes to control drone and sound tuning, nothing to worry about.

The rattle could be millions of things, could you get a video?

Iowa X3 · 09-30-2019, 06:53 PM

Are you talking about a chattering kind of noise on cold start up? Seems like it's normal for these engines to have a somewhat loud valvetrain, especially right after start up. Mine has done that ever since I got it at 10k miles and less than a year old. It always smooths out though but I would say it does make a bit more of a sewing machine noise than most other engines.

rcsup1 · 10-02-2019, 03:51 PM

Quote:

Originally Posted by frogman27

Hi.
First of all. I had problem with white smoke coming out from exhaust pipe and I got covered by warranty(turbo oil feed line).
But there is still rattling sound when I start engine.
And about my exhaust pipe, air coming out from one pipe only, the other pipe, very little amount air coming out. They are not same. is there any tip for fix it?

28i or 35i?

frogman27 · 10-02-2019, 05:03 PM

Quote:

Originally Posted by rcsup1

28i or 35i?

28i

frogman27 · 10-02-2019, 05:10 PM

This is video of my car when I start engine.
And is Liqui moly valve cleaner and Injection cleaner will help this?

09-28-2019, 09:29 AM	#1
frogman27 New Member 0 Rep 19 Posts Drives: Bmw x3 Join Date: Aug 2019 Location: Destin iTrader: (0)	Loud rattling sound(2013 x3 f25) Hi. First of all. I had problem with white smoke coming out from exhaust pipe and I got covered by warranty(turbo oil feed line). But there is still rattling sound when I start engine. And about my exhaust pipe, air coming out from one pipe only, the other pipe, very little amount air coming out. They are not same. is there any tip for fix it?
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09-28-2019, 10:41 PM	#2
willywi Second Lieutenant 86 Rep 232 Posts Drives: BMW x3, BMW x5 Join Date: Jul 2018 Location: NY iTrader: (0)	It's most likely turbo wastegate rattle
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09-29-2019, 05:57 PM	#3
TheCoolX3 Lieutenant 174 Rep 540 Posts Drives: 2016 BMW X3 35i M-Sport Join Date: Feb 2018 Location: FL iTrader: (0) Garage List 2014 Porsche Cayenn ... [0.00] 2019 Tesla Model X [0.00] 2016 BMW X3 [0.00]	Exhaust only coming out of one pipe is normal. There is a valve in the exhaust that opens and closes to control drone and sound tuning, nothing to worry about. The rattle could be millions of things, could you get a video? __________________ 2016 X3 35i \|M-Sport\|Megan Racing Coilovers\|FBO+\|BM3\|Jordan Tuned\|Valvetronic Designs\| 1998 750iL V12\|2017 440i\|2019 991.2 GT3RS Weissach\|2019 Model X\|...and some others Instagram @TheCoolX3
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09-30-2019, 06:53 PM	#4
Iowa X3 Private 13 Rep 71 Posts Drives: 2013 X3 28i Join Date: Jul 2014 Location: Clive, Iowa iTrader: (0)	Are you talking about a chattering kind of noise on cold start up? Seems like it's normal for these engines to have a somewhat loud valvetrain, especially right after start up. Mine has done that ever since I got it at 10k miles and less than a year old. It always smooths out though but I would say it does make a bit more of a sewing machine noise than most other engines.
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10-02-2019, 05:10 PM	#7
frogman27 New Member 0 Rep 19 Posts Drives: Bmw x3 Join Date: Aug 2019 Location: Destin iTrader: (0)	This is video of my car when I start engine. And is Liqui moly valve cleaner and Injection cleaner will help this? Last edited by frogman27; 10-02-2019 at 05:35 PM.. Reason: Error
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