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      02-07-2018, 09:46 PM   #1
doug_999's Avatar

Drives: 2018 M3/2011 1M
Join Date: Mar 2008
Location: Chicago, IL

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Rattle when clutching in?

So it is winter and cold here and my car has about 400 miles on it. However the last few days, I've noticed what I originally thought was a rattle when clutching in (worse when car is cold). Tonight I listened a bit closer and it seems to be the exhaust - as I can hear it when clutched in and revving the motor - maybe it is just the ZCP exhaust? The odd part is it appears to come from right about where the trans is - and almost resembles the popping sound the car can make when in sport+ mode (I'm in sport or efficient when this happens) - but once again, it comes from where the trans is, not the rear of the car.

Anyone else have this? Normal?
2018 M3, Mineral White, 6 speed, ZCP, loaded sans CCB
2011 1M, Black loaded sans sat radio
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      02-07-2018, 09:57 PM   #2
Lieutenant Colonel

Drives: 18 MG M3 ZCP
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Location: Atlanta

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The popping sound happens in sports mode too, may be u are hearing that
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      02-07-2018, 10:40 PM   #3
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Drives: F80
Join Date: Oct 2014
Location: San Diego

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I get a rattle sound when clutching in on 1st gear during certain engine loading conditions. I think it happens more when off throttle and engine is under load. It seems it is more or less normal.
2018 F80 M3 6MT ZCP Red Start Button
2018 G01 X3 M40i ///M Performance Cargo Net
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