Pool of water behind fuel flap

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Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 47

  Z3 roadster 2.2i

Pool of water behind fuel flap

Post by Bumpa » Fri 21 Sep, 2018 17:25

After all the rain we have had, there is a considerable pool of water behind the fuel flap on my 2002 Z3. I know this pocket is rubber lined so shouldn't rust, but surely water is supposed to drain away. How is that meant to be achieved?

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('_')Z3
Joined: Sun 21 Mar, 2010 19:29
Posts: 554

  Z3 roadster 2.0
Location: Lymm

Re: Pool of water behind fuel flap

Post by ('_')Z3 » Fri 21 Sep, 2018 17:40

At the bottom there is a small drainage hole in the rubber. This often gets blocked, if you put your hand in below the cap you should be able to feel it.
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motco
Joined: Tue 18 Aug, 2009 19:12
Posts: 671

  Z3 roadster 2.2i

Re: Pool of water behind fuel flap

Post by motco » Fri 21 Sep, 2018 21:40

Wot 'e said ^

Poke it out with a piece of stiff wire

Juvvajuvva
Joined: Sun 06 Nov, 2016 16:52
Posts: 66

  Z3 roadster 2.8

Re: Pool of water behind fuel flap

Post by Juvvajuvva » Sat 22 Sep, 2018 09:37

If you get a bicycle gear or old style brake cable that has a bullet end on it and poke it down the tube , that works or a plastic flexi rod. That’s what I use as it’s less abrasive. Also works for the roof drains.

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knighthawk
Joined: Mon 17 Oct, 2011 12:45
Posts: 28

  Z3 roadster 2.2i

Re: Pool of water behind fuel flap

Post by knighthawk » Sat 22 Sep, 2018 21:08

Juvvajuvva wrote:
Sat 22 Sep, 2018 09:37
If you get a bicycle gear or old style brake cable that has a bullet end on it and poke it down the tube , that works or a plastic flexi rod. That’s what I use as it’s less abrasive. Also works for the roof drains.
what and where are the roof drains please :dunce:

Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 47

  Z3 roadster 2.2i

Re: Pool of water behind fuel flap

Post by Bumpa » Sat 22 Sep, 2018 22:26

Thank you Knighthawk. I don't know where the roof drains are either.

I sucked out all the filthy water from the fuel filler pocket with a Pasteur pipette (I was a lab scientist) and then cleaned out all the sludge. Lo and behold the drain hole became visible. However, I can't get anything to go down the drain tube. In what direction does it lead? Does it go straight down, or inwards then down, or back and down, or forwards and down? But I managed to blow through the hole and must have cleared a blockage because if I squirt some clean water in the pocket it now drains away and appears under the car. A result of sorts. It would have been nice to rod it out properly though.

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Southernboy
Joined: Thu 07 Oct, 2010 13:39
Posts: 6390

  Z3 roadster 3.0i
Location: Johannesburg

Re: Pool of water behind fuel flap

Post by Southernboy » Sun 23 Sep, 2018 07:25

Try a long thin cable tie.. Or a thin plastic knitting needle if you still knit... :D
"Normal is overrated"
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Boosh
Joined: Sun 30 Nov, 2014 22:40
Posts: 316

  Z3 roadster 1.9i

Re: Pool of water behind fuel flap

Post by Boosh » Sun 23 Sep, 2018 07:59

Personally, I use the WD-40 squirting straw...

Hdz3
Joined: Thu 03 Dec, 2015 17:17
Posts: 18

  blank

Re: Pool of water behind fuel flap

Post by Hdz3 » Mon 24 Sep, 2018 20:27

Length of brazing wire

Warrior
Joined: Tue 11 May, 2010 11:02
Posts: 411

  Z3 roadster 3.0i

Re: Pool of water behind fuel flap

Post by Warrior » Mon 24 Sep, 2018 23:56

Successfully cleared mine with a piece of garden wire but every so often needed re-doing so now I give it an occasional 1 second blast with the jet wash.

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