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      02-19-2020, 07:53 AM   #14
stewbets
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Drives: '08 335xi, '04 545i
Join Date: Sep 2019
Location: Dayton, OH

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From multiple other threads, the consensus on the ticking noise seems to be a noisy evap purge valve, also known as a fuel tank breather valve. This valve is toward the firewall and below the intake plenum. When I've heard the noise on mine, it did seem to be coming from the cold side of the engine, so this makes sense.

https://www.newtis.info/tisv2/a/en/e...lation/Od7NkWW

https://www.realoem.com/bmw/enUS/sho...diagId=13_1179