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R_S R_S is offline
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Join Date: Jan 2019
Car: E90 335i E30 328 turbo
Default N54 engine noises. - 01-15-2019, 12:40 PM

Hi everyone.
First of all I wanted to say that i'm new to n54 engines and this community.
I reacently bought a E90 335i with some 136k miles.
The price was right so I may overlooked some issues.

After a month of driving there are some different noises that have developed in engine. First I thought that that was wastegate flaps that rattle but now I hear that more noise comes out from front of the engine. Could there be an issue with vavle train or vanos? I also know that intake valves has never been cleaned.

Can someone help me identify the issues causing these rattle noises?

The sound in the video sound worse than in reality.

N54B30 rattle noises - YouTube

Really appreciate any help towards solving these issues.
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N54_ABQ N54_ABQ is offline
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Posts: 27
Join Date: Apr 2018
Car: 2007 BMW E92 335i
Default 01-15-2019, 03:22 PM

Welcome to the N54 platform and community!

Could be a power steering pump getting ready to crap out. Only guessing here.

You can try removing the serpentine belt and see if the noise goes away. If not, than its more serious.

2007 335i E92 6MT FBO, Stock Turbos

Last edited by N54_ABQ; 01-15-2019 at 03:33 PM..
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