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BMW 3-Series (E90 E92) Forum
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New owner 2011 335d engine noise make me crazy!!
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| 10-31-2019, 04:27 PM | #23 |
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Private
 
11
Rep 74
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Honestly it’s probably normal sounds. But if I can get better performance with the new vacuum pump why not. Here is another thing when I open the oil cap with the car at idle the sound is more noticeable but however it’s not a significant amount. There is air that blows out of oil cap.
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Appreciate
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| 335d, engine noise, ps pump |
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