Horrible Rattling Exhaust (mid carriage)

F30Farang · 02-17-2024, 06:25 AM

Hi there

Out for a drive today in the 2014 F30 320D sportine when a nasty steel on steel rattling kicked off.

Made it to a mechanic and we had a look. They say the corroded bolt in the image is the issue. The whole exhaust was rattling down against a steel bracket amidships.

I think a bracket may be missing from
The area below the drivers seat?

Anyone experienced this and any tips on getting the right fix?

Thanks

🙏🏼

vcx · 02-17-2024, 08:59 AM

I had the same issue with my brand new 340, dealer-installed MPPSK.

They had mounted the midpipe slightly wrong and a a screw was touching the heat shield, if I remember correctly.

The issue was gone once they corrected the fitment of the midpipe and I've never experienced that problem again.

QUESTOR · 02-29-2024, 04:05 PM

AA dp installed and (because of slightly different angle) under load, exhaust would make contact with heat shield and x-brace. reclocked dp a little and used a couple small washers on x-brace, zero problems thousands of miles later.

02-17-2024, 06:25 AM	#1
F30Farang Registered 0 Rep 1 Posts Drives: 2014 F30 320d Sportline Join Date: Feb 2024 Location: thailand iTrader: (0)	Horrible Rattling Exhaust (mid carriage) Hi there Out for a drive today in the 2014 F30 320D sportine when a nasty steel on steel rattling kicked off. Made it to a mechanic and we had a look. They say the corroded bolt in the image is the issue. The whole exhaust was rattling down against a steel bracket amidships. I think a bracket may be missing from The area below the drivers seat? Anyone experienced this and any tips on getting the right fix? Thanks 🙏🏼 Attached Images
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02-17-2024, 08:59 AM	#2
vcx Second Lieutenant 85 Rep 182 Posts Drives: 340 xdrive MPPSK 6-manual Join Date: Oct 2019 Location: Europe iTrader: (0)	I had the same issue with my brand new 340, dealer-installed MPPSK. They had mounted the midpipe slightly wrong and a a screw was touching the heat shield, if I remember correctly. The issue was gone once they corrected the fitment of the midpipe and I've never experienced that problem again. __________________ 340 xdrive 6MT - HJS catted DP - MPPSK - TU HPFP - 550i clutch - VAC monoball control arms - Eibach springs - H&R antiroll bars - AutoSolutions SSK - Brembo HP2000 pads Corvette C6 Z06 Z07
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02-29-2024, 04:05 PM	#3
QUESTOR Resident Fool 7 Rep 26 Posts Drives: '18 440i/'98 R50/'88 Conquest Join Date: Jul 2023 Location: NO. ILL iTrader: (0)	AA dp installed and (because of slightly different angle) under load, exhaust would make contact with heat shield and x-brace. reclocked dp a little and used a couple small washers on x-brace, zero problems thousands of miles later. Last edited by QUESTOR; 02-29-2024 at 04:06 PM.. Reason: i never learned how to read and write.
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