Ladies and gentlemen,
for those of you who are interested I have some photos of the interior of the VF fuel tanks.
I guess that looks the same for several VF types, this specific tank comes from a 1000 F. I bought it for
a few bucks because I couldn´t get behind how that system really looks like and even my endoscope camera didn´t help me much.
What we can see In front , I mean the tube with that double 90 degree bent which then disappears in the ground is the outlet tube. If anybody can tell me, what the reason is for these multiple bendings, I´d be pleased to have an explanation.
As you surely know there´s another siphon-like bending underneath the tank.
Then, in the „“middle“ there is the tapping point of the „ON“ position, with its metal strainer at the end, and in the rear you see the same strainer for the fuel tap´s „RES“ position, of course located much deeper in the tank. So far, so good.
If I can trust my knowledge in physics, this whole arrangement means, that, if the fuel level drops below the highest point oft the system, i.e. the part between the two 90 degree bends of the outlet tube, then the fuel flow would stop, if no pump sucks out the petrol. Would you agree??
That explains why the f**k I can not drain my bloody tank!
But this does not explain why I could drain my tank nearly completely in November 2021.
Anyway, I´m glad to have spent the 10 Euros; better than brooding all night long about how it all might look.
Best wishes and scusa! for my english…
Joe