W210 e430 (2002) fuel filter connections

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johnsco

MB Enthusiast
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Joined
Nov 22, 2008
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2,666
Location
Leeds, West Yorkshire
Car
E280CDI SPORTS ESTATE and C200 KOMPRESSOR SE Coupe Auto (1.8 lit petrol)
I became aware of a clonking noise from the rear of the E430.
It sounded like something was clonking against the petrol tank.
I found a very-corroded piece of steel small-bore capillary tube.
It was not secured and was knocking about.
It traced one end of it to a rubber tube connected to a small connector in the centre of the back of the fuel filter.
This is on the rear left side of the car
From there it trailed across the rear sub-frame to the right side and did not appear to be connected to anything.
Looking a bit further, I found a loose red rubber tube connected into the fuel piping to the tank.
In the end of the rubber tube was a corroded stub - Which I guess is where the steel tube used to go.

It has obviously not done anything useful in a long time.
The steel tube is so-corroded that it no longer has hole thru the middle of it.
What did it do ?
Does it matter ?
Is there any point in replacing it ?
Thanks for your replies.
 
BUMP ... Anyone please
 

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