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      05-05-2014, 10:34 PM   #1
CYL
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rattling sound

Hi, i found that there is some rattling sound from the engine when i press the gas....does anyone know what might be the issue please?
it happens the most when i accerate from stationary, and it happens occasionally....
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      05-05-2014, 11:54 PM   #2
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Wastegate?
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      05-06-2014, 12:10 AM   #3
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Wastegate?
is it normal to have that rattling sound?
i just feel a bit odd with it happening occasionally, and particularly only when accerating from stationary....

will get my car for a check up this month together with the suspension issue, but would like to have some knowledge prior visiting the mechanic in order to avoid any unnecessary parts replacement.
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      05-06-2014, 12:59 AM   #4
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i think its ur wastegate rattle?
sound like this?
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      05-06-2014, 08:57 PM   #5
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mine is a 325, and its a NA, so, i dont think there is a wastegate in NA engine?

"A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system."
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      05-06-2014, 10:49 PM   #6
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Quote:
Originally Posted by CYL View Post
mine is a 325, and its a NA, so, i dont think there is a wastegate in NA engine?

"A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system."
Oh def not wastegate, wastegate is only application on turbo applications.

What are your oil levels? when was your last oil change? on my previous e46 I had a similar problem with a rattle sound coming from the engine bay, but it was due to low oil. After my oil service the sound went away.
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      05-07-2014, 02:54 AM   #7
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Oh def not wastegate, wastegate is only application on turbo applications.

What are your oil levels? when was your last oil change? on my previous e46 I had a similar problem with a rattle sound coming from the engine bay, but it was due to low oil. After my oil service the sound went away.
Just had oil change a month ago, oil level seems ok as there is no fault coming on the screen.

I believe the rattle sound would not be the ticking sound generated as a result of the poor engine block design found on any Pre 2009 model (the common issue).
Instead, the sound only appears occasionally when i accerate from stationary, sometimes i hear that sound from a old Japanese car which drives pass me too.
P.S. when i accerate, i am pressing the pedal gently but not aggressively.
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      05-07-2014, 09:55 AM   #8
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haha thread making me lol.

us 335 peeps are so fed up and para about wastegate rattle that anytime anyone remotely mentions the word rattle. we think its wastegate. I honestly thought op was talking about a 335.
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      05-07-2014, 09:53 PM   #9
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haha thread making me lol.

us 335 peeps are so fed up and para about wastegate rattle that anytime anyone remotely mentions the word rattle. we think its wastegate. I honestly thought op was talking about a 335.
Hi, sorry for the confusion...
I dont know how to describe the sound but it's like....ka.ka...ka..ka...ka...when i accerate from stationary....sounds like sth not going smooth from the engine bay...
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      05-08-2014, 09:35 AM   #10
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How many kms have you done?
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      05-08-2014, 09:42 PM   #11
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How many kms have you done?
57000km, 2008 model, auto
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