Buying 09 335i question

Zmfc88

New Member
Oct 17, 2017
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2009 335i sedan
Hello all
I tried to search with no luck, I am looking at a 09 335i sedan with 65k miles. How ever when I went and test drove it I could hear a pretty distinct ticking noise. After a little search I seemed to be coming from directly under the oil cap. I have researched this a bit and found that it can be pretty common for the n54. Can you fellas give me any insight as to what it is and if it's ok for the car or should I steer clear of it. Thank you in advance. Video attached
 

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dyezak

Major
May 4, 2017
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Plano TX
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335is
DI injector noise. Of no concern from a reliability or performance perspective. It is definitely an NVH issue and was mitigated by BMW specifying a new thicker fluid to fill the newer Index 12 fuel injectors with.
 
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