Reserve fuel tank pipe

Stephen

New Member
Hello there I hope someone may be able to help. I have a P5B coupe and have a fuel leak where all three fuel pipes meet at the reserve tap under the car on the crossmember. I wish to join the main fuel line and cut out the reseve junction all together as i never use it. how can i identify which fuel line is which. Thanks Stephen.
 
Maybe this thread helps :
reserve petrol tap under car
If you want to stay with one line only, you must use the reserve line, it simply has a lower end in the fuel tank than the main line. Normally, leaks come from the O-ring of the tap itself and maybe it´s easier to fix this
 
The yellow pipe is the reserve, the main line is black.

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Yep, I got some of that hose too :) I am glad some ones reported it, still in my car too :rolleyes: God I am lazy.
Thanks for the post reminding me to swap it out.


Graeme
 
very interesting thread and good link to Volksbolts.
In the engine bay I have replaced all old plastic lines (although they looked good after 43 years, better than me at this age) and I will have a look on the rubber lines. One of the next work is to replace the long lines under the car. I have seen an interesting thread here on a German Merc forum, where brass lines have been used if you do not want to work with i.e. modern plastic lines and special fittings. Copper is not allowed here, but brass. As the end sections must be thicker to hold the following rubber hose, the guy simply used short sections with the inner diameter of the main line outer diameter and soldered them. Very important is use of correct clamps. You will often see the single point clamps normally used for water hoses and the better solution is showed on the Volksbolts site.
 
do not know exactly at the moment, but here, MOT (TÜV) will not accept it, only steel, plastic, brass (and rubber hoses, but not for long pieces, i.e. from motor to tank).
We have also Kunifer (a mixture as the name shows) but even here it CAN be, that the MOT engineer says no. That´s for fuel lines here, you will not know, what the hell of problems you have here for brake lines but at the end I can understand it, on fuel and brake fluid your life depends.
For copper I can imagine, that not correct fixing to the car´s body can create corrossive problems.
 
do not know exactly at the moment, but here, MOT (TÜV) will not accept it, only steel, plastic, brass (and rubber hoses, but not for long pieces, i.e. from motor to tank).
We have also Kunifer (a mixture as the name shows) but even here it CAN be, that the MOT engineer says no. That´s for fuel lines here, you will not know, what the hell of problems you have here for brake lines but at the end I can understand it, on fuel and brake fluid your life depends.

For copper I can imagine, that not correct fixing to the car´s body can create corrossive problems.

Brass is much worse for this, with one of the 2 elements in the Brass mix eroding in favour of the other.

Copper tends to work harden with vibration and then you have the risk of cracking..

Once again brass does not have the ductility of Copper and work hardens far quicker and is brittle to boot.
 
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