Fuel tank leak

Kromrom · 10-16-2018, 02:43 PM

Hey.
Driving home from work today I thought to myself, "Did I not have 1/2 a tank yesterday? hmmm and why is my rear windows so dirty, I just washed the car".
As I arrived and stepped out I could immediately smell diesel, Got down on all four and found the fuel tank, wheel, rear right suspension parts etc soaked.

When I then was under the car looking for the leak with a flashlight, I couldn't find anything because of all the plastic everywhere..

I had the car turned on when I looked under it, it wasn't leaking so it seamed to be on the top of the tank and would spill out as I was driving.
Removed the rear seat and opened the hatch to gain access to the fuel pump.

This is what I saw:

View post on imgur.com

What do you think is the problem? I first noticed the little hole there but how would that break? I assume it's there to let air in the tank?
Do you think It's the seal around the fuel pump assembly that's leaking?
Is this a common/known problem for my model/year?

Thanks.

Kromrom · 10-17-2018, 09:59 AM

Okay I guess mice ate the fuel pump assembly. What is the little white thing they made a hole in? What is its purpose?

Enabled · 10-17-2018, 10:41 AM

Looks like it's a blind end. You can maybe try to repair it, or simply replace the whole fuel pump assembly.

10-16-2018, 02:43 PM	#1
Kromrom New Member 3 Rep 14 Posts Drives: F31 320D 2013 Join Date: Mar 2018 Location: Sweden iTrader: (0)	Fuel tank leak - 320D 2013 Hey. Driving home from work today I thought to myself, "Did I not have 1/2 a tank yesterday? hmmm and why is my rear windows so dirty, I just washed the car". As I arrived and stepped out I could immediately smell diesel, Got down on all four and found the fuel tank, wheel, rear right suspension parts etc soaked. When I then was under the car looking for the leak with a flashlight, I couldn't find anything because of all the plastic everywhere.. I had the car turned on when I looked under it, it wasn't leaking so it seamed to be on the top of the tank and would spill out as I was driving. Removed the rear seat and opened the hatch to gain access to the fuel pump. This is what I saw: View post on imgur.com View post on imgur.com View post on imgur.com What do you think is the problem? I first noticed the little hole there but how would that break? I assume it's there to let air in the tank? Do you think It's the seal around the fuel pump assembly that's leaking? Is this a common/known problem for my model/year? Thanks.
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10-17-2018, 09:59 AM	#2
Kromrom New Member 3 Rep 14 Posts Drives: F31 320D 2013 Join Date: Mar 2018 Location: Sweden iTrader: (0)	Okay I guess mice ate the fuel pump assembly. What is the little white thing they made a hole in? What is its purpose?
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10-17-2018, 10:41 AM	#3
Enabled Lieutenant Colonel 1406 Rep 1,797 Posts Drives: 328xd Wagon, M2 Competition Join Date: Jun 2018 Location: Houston iTrader: (0)	Looks like it's a blind end. You can maybe try to repair it, or simply replace the whole fuel pump assembly. __________________ -2014 328d Wagon, 8HP. Self-tuned, 270hp/430ft-lbs. -2019 M2 Competition MT, Alpine White. Self-tuned 560hp -2016 Mini Cooper S, MT. Many plans. Others: -E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe.
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