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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions M340i shaking during idle

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      07-04-2020, 08:55 PM   #1
M340_Izzy
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M340i shaking during idle

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I have a 2020 M340 with 2k miles did spark plugs currently running stage 2 bm3 OTS map. I have a cold start delete I noticed that the car shakes a bit during idle when I turn it on in the morning is that normal ? Is it happening because of the cold start delete ?
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      07-04-2020, 10:03 PM   #2
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Sounds like your timing is off, probably from the new plugs?
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      07-04-2020, 10:20 PM   #3
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Quote:
Originally Posted by Burrcold View Post
Sounds like your timing is off, probably from the new plugs?
I'm not sure . I have the spark plugs gapped 0.022. I'm not sure what it is. Only happens on cold starts.
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      07-08-2020, 02:10 PM   #4
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Mine will do this, too, on cold starts.
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      07-08-2020, 09:07 PM   #5
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I've been getting the same. Stock tune and stock plugs. I need to pay more attention if it's only on cold starts.
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      07-10-2020, 02:08 PM   #6
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Mine does this as well. It's only been on cold start and settles down as soon as I start driving. It's a bit annoying for sure.
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      07-10-2020, 07:07 PM   #7
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I've read and heard this can be due to the quality of gas. My F30 used to do this and I noticed when I had filled up with 93 a few times it seemed to subside.

Maybe it's something completely different but just my experience!
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      07-10-2020, 07:30 PM   #8
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Quote:
Originally Posted by Gdiddy23 View Post
I've read and heard this can be due to the quality of gas. My F30 used to do this and I noticed when I had filled up with 93 a few times it seemed to subside.

Maybe it's something completely different but just my experience!
Yeah it's probably different I use 93 I'm tuned to 93 octane . But not sure what's the Issue I guess it's Normal😂
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