E46Fanatics - View Single Post - S54 'rattle' at idle?
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Old 09-23-2019, 07:16 PM   #2
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Join Date: Sep 2019
Posts: 4
Here's another video of revving the motor up a bit. As mentioned, the noise goes away when the engine is revved. It also sounds like it might be coming from the air plenum or the fuel rail. Not sure if it could possibly be a bad injector?

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