03-16-2024, 05:19 PM | #1 |
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Weird metallic rattle on startup 2020 m50i
Hello everyone, noticing a ticking/rattling noise on startup coming from my 2020 M50i . Not sure if it’s coming from inside the engine (timing chain) or a belt tensioner / idler pulley. Also notice it when the cars under load at lower rpm’s. When the transmission is lugging i notice it more. Very hard to capture on camera and you can barely hear it but it’s been bugging me. Let me know what you guys think. Thanks🙏
https://youtube.com/shorts/WdYKiYvFM...SvyRoA_65DFPQm |
03-17-2024, 05:17 AM | #2 |
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Drives: 2020 M340i rwd
Join Date: Feb 2023
Location: Atlanta GA
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I know this sound very weird but see if it makes the sound when you start it from inside, not using remote start. There was a software update on the g20s that would cause that same noise during remote start but not during a regular push buttom start done from inside.
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03-17-2024, 08:34 AM | #3 |
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Could be an exhaust heat shield making contact with the exhaust. Could be a loose heat shield, or the exhaust tailpipe is not hanging correctly on the isolation hangers and is cocked. That could happen on a lift if the tech is not careful.
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