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Old 14th January 2022, 22:55   #1
goltho
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Default Anyone know what this is?

Uncovered this when removing the rear seat from the Tourer today. Photos show the location and corrosion. It's a hollow tube containing what looks like a thin sheathed cable, part of a loom, and a rigid encased something-or-other, possibly a pipe or hose.

The round corroded tube is of quite thin metal. There isn't one on the other side so it wouldn't appear to be structural.

What is it please?







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Old 14th January 2022, 23:28   #2
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I have been warning about this tube that contains the wires that run from the offside wheelarchthrough to in front of the fuel tank for a long while now. Discovered mine was going tommy cotton when I put a new fuel pump in the diesel tank. This is what I believe leads to flooding of the area behind the drivers seat. Mine was not that bad. I cleaned the cavity that runs from The wheel arch to the inside where the ‘pipe’ runs, and then I sprayed some expanding foam back towards the wheel arch into the wheel area. Waited for it to dry, trimmed it, then covered it in underseal.
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Old 14th January 2022, 23:31   #3
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Quote:
Originally Posted by bl52krz View Post
I have been warning about this tube that contains the wires that run from the offside wheelarchthrough to in front of the fuel tank for a long while now. Discovered mine was going tommy cotton when I put a new fuel pump in the diesel tank. This is what I believe leads to flooding of the area behind the drivers seat. Mine was not that bad. I cleaned the cavity that runs from The wheel arch to the inside where the ‘pipe’ runs, and then I sprayed some expanding foam back towards the wheel arch into the wheel area. Waited for it to dry, trimmed it, then covered it in underseal.
So it's simply a conduit then as I suspected? Is there a fuel pipe in there too, do you know?

Dougie.
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Old 15th January 2022, 00:04   #4
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the journey starts inside the rear o/s wheel arch. that is the entry point of moisture. you could fabricate something for the tube but you will need to seal the original entry point of moisture. i removed the horizontal cover in the arch, and cleaned the interior surfaces and sealed them with dynax . (you may have to retap the holes and use self tappers or similar) the bolts will be well rusted and may snap off when removing the cover. once you have entry to the (hole) in the wheel arch , after removing the wheel arch liner, you will need to fill this aperture with some kind of a water tight filling. yes this has been flagged up many times before as a potential rot hot spot . .... the mk2 models were less protected than the mk 1 versions and suffer even more readily to this . the covers were available on rimmers but im not sure now. i was lucky to rescue mine and refettle just in time . ....
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Old 15th January 2022, 08:51   #5
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Crikey that’s a bad one!! It was only the very early mk1s that had the longer cable cover under the wing.

I would be removing one from a scrap car and replacing yours Dougie, a good automotive sealant will hold it in place rather than welding.
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Old 15th January 2022, 09:11   #6
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Would the wires be from the fuel filler cap?
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Old 15th January 2022, 09:20   #7
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Christ that looks bad.
I'll be looking out for one of those tubes at the breakers now.

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Old 15th January 2022, 09:34   #8
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Quote:
Originally Posted by macafee2 View Post
Christ that looks bad.
I'll be looking out for one of those tubes at the breakers now.

macafee2
Well get two then!! (Actually dont. I'm fabricating a fix..)
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Last edited by goltho; 15th January 2022 at 14:15..
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Old 15th January 2022, 10:01   #9
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Quote:
Originally Posted by Terryf View Post
Would the wires be from the fuel filler cap?
There’s a thick bunch of wires as part of a loom so they may be part of that. It’s the thick black ridged pipe that interests me.

Dougie.
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Old 15th January 2022, 10:10   #10
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I believe these are the charcoal canister and fuel breather pipes travelling to the fuel tank from the back of the car/fuel filler, hence the reason they are protected by the armouring plate that sits in the osr wheel arch.

Both the armouring plate and the tube that passes the pipes inside the car under the rear bench have corroded away on my 75. The bend sits slightly lower than the entry/exit points so will collect a small amount of water leading to corrosion. Not a great design, but I guess has lasted the average age of a car.
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