Noisy fuel tank - BMW 3-Series Forum (F30 / F32)

letsavit · 02-03-2013, 02:58 PM

Noticed now and then when radio off when coming to a stop I would hear a light knocking from the rear. Well today I washed the car so investigated , i rocked the rear to see if I could hear anything and i could hear fuel sloshing back and fourth in the tank, this appears to be the sound I'm hearing in the car. Would of assumed there be some type of baffle in the tank, unless my is missing?

Anyone else noticed this?

RobUK · 02-03-2013, 06:27 PM

Quote:

Originally Posted by letsavit

Anyone else noticed this?

Yep, I've noticed this too when putting the car in the garage - it's very quiet and I can hear the fuel 'bumping' the sides of the tank.

edz_f31 · 02-04-2013, 01:01 PM

Yeah me too when going into my garage. Thought I had hit something the first time it happened

letsavit · 02-04-2013, 04:04 PM

Thanks for the replies guys, least its not just mine. Never had a car before where I could hear the fuel sloshing/banging in the fuel tank so would be interested if they have fitted a baffle of some sort in these tanks.

gteye · 05-10-2013, 05:27 AM

Hey

I have the same issue. its weird.

zerolight · 05-10-2013, 07:18 AM

Is the tank under the boot floor? If so then perhaps the rubber line John posted would deaden it?

02-03-2013, 02:58 PM	#1
letsavit New Member Drives: BMW 320d sport Join Date: Jan 2013 Location: London Posts: 16 iTrader: (0)	Noisy fuel tank Noticed now and then when radio off when coming to a stop I would hear a light knocking from the rear. Well today I washed the car so investigated , i rocked the rear to see if I could hear anything and i could hear fuel sloshing back and fourth in the tank, this appears to be the sound I'm hearing in the car. Would of assumed there be some type of baffle in the tank, unless my is missing? Anyone else noticed this? Last edited by letsavit; 02-03-2013 at 03:12 PM.
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02-04-2013, 01:01 PM	#3
edz_f31 Private First Class Drives: F31 320d MSport Join Date: Nov 2012 Location: Cumbria, England Posts: 141 iTrader: (0)	Yeah me too when going into my garage. Thought I had hit something the first time it happened __________________ F31 320D M Sport Touring Mineral Grey / Coral Red

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02-04-2013, 04:04 PM	#4
letsavit New Member Drives: BMW 320d sport Join Date: Jan 2013 Location: London Posts: 16 iTrader: (0)	Thanks for the replies guys, least its not just mine. Never had a car before where I could hear the fuel sloshing/banging in the fuel tank so would be interested if they have fitted a baffle of some sort in these tanks.

05-10-2013, 05:27 AM	#5
gteye New Member Drives: F30 Join Date: Apr 2013 Location: South Africa Posts: 8 iTrader: (0)	Hey I have the same issue. its weird.

05-10-2013, 07:18 AM	#6
zerolight ... Drives: F30 320d M Sport Auto Join Date: Mar 2013 Location: Glasgow Posts: 239 iTrader: (0)	Is the tank under the boot floor? If so then perhaps the rubber line John posted would deaden it?