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Discussion Starter · #1 ·
I am experiencing some metallic like knocking sound seems to be coming from the exhaust of my 2017 718 cayman base model during idling. It only happens after the car is warmed up. Brought back to my agent in Singapore and they can replicate the sound but cannot nail down the cause. They are consulting Germany and ask me to wait till HQ hv the next course of action...

Anyone else experiencing this too and any recommendations???
 

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Do you have PSE? If so it could be the value rattling - there’s a lengthy post on here about it. Having said that I would describe the value issue a rattle rather than a knock. Mine rattles at 2000 rpm when the value opens. Easist way to check this is to simply switch off PSE and see if it still persists.
 
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