10-25-2022, 10:52 AM | #1 |
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Rattling sound right after start
When I'm outside my car remote starting it, there is a quick rattling sound after it starts. Anyone else hear this? Did it since new….only 3k miles on it.
Sounds like the starter motor disengaging or something to that effect. This is not an internal engine noise, it's peripheral. |
10-25-2022, 06:30 PM | #2 |
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Same. I don’t have an answer, but I thought I’d chime in and say my 2022 M550i has done the same thing since I’ve owned it. I took delivery in late July and it has 1900 miles currently. Mine sounds almost like some component of the exhaust rattles, just for 1-2 secs, and only audible from out side immediately after start.
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10-25-2022, 06:53 PM | #3 |
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Might be the high pressure fuel pump
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10-25-2022, 07:43 PM | #4 | |
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10-26-2022, 06:40 AM | #7 |
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Ahhhh…yes, only on cold starts. I was actually thinking of the wastegate, but then thought BMW wouldn't allow that kind of slop. Robbyb83 nailed it too…the exhaust. You were in the right ballpark. Glad its not an issue.
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10-26-2022, 08:07 AM | #8 |
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10-14-2023, 05:31 PM | #10 |
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I found a rattle under my backseat. It's rattling at start up and 1500 rpm. I removed the rear seat and on the passenger side removed the fuel pump access panel. Found the rattle to be a plastic fuel line 😎. Hopefully this helps someone. I posted it on. Tictok and yt. 2018 m550i
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10-15-2023, 07:33 AM | #11 | |
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