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      02-18-2020, 09:16 AM   #1
Rated•M
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Drives: 2008 BMW 335xi
Join Date: Feb 2020
Location: USA

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08 335I strange noises

Hi everyone,
Hope this is in the correct place.
So the car has been sitting in the garage for the past 10 days with the intake manifold, charge pipe and a few other things taken off while I was working on the ofhg. I put everything back together and immediately on start up I had a loud metallic ticking noise that was not there before.
I know theres engines are noisy from the DI but this is something else. From what I can tell it's coming from under the stock air box maybe by the rear manifold area.
The ticking goes away or becomes much quieter under acceleration.
ANY IDEAS?

side note: my coolant expansion tank is making a weird noise also now, I added some coolant and it started making an intermittent humming noise.



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2008 BMW 335XI sport package//cold weather package//120k & counting.