audiomick Posted February 9 Report Share Posted February 9 Hallo. I had a look at the fuel lines on my V11 Le Mans today, and noticed it was sweating a bit of fuel where the fuel line comes off the attachment under the tank. It looks like mine is this version, i.e. fuel pump in the tank: https://wendelmotorraeder.de/benzinleitungen-v11-02-le-mansskura-ex-30_3006_300602_30060203_3006020310_300602031016.html The link leads to a page of the parts lists at Wendel Motorcycles ( Wendel Motorräder ) in Berlin. Under the tank, instead of part #5 on the drawing, that apparently looks like this: There are hose clamps such as those that part #7 apparently are: so it would seem that someone has already been messing around with it at some point. I had already tightened up the outer clamp of the two, i,e. the one closer to the riders knee, which was loose enough to be able to turn it on the fuel line with very little effort when I took delivery of the bike. Today I noticed that it wasn't actually clamping the fuel line. I don't know for sure if I had tightened it onto the fuel line as intended, or if I missed the fuel line the first time round. The fuel line isn't pushed all the way up the "nipple" it is on, and I couldn't move it any further up today. Doesn't surprise me really, I was outside, and it was only about 3°C, so the fuel line was hard as rocks and not inclined to be moved. As far as I could tell, there was at least the width of the clamp of the nipple inside the fuel line, and maybe I have got it solved for now. I'll definitely be having another look at it though. Anyway, I have a couple of questions that I hope someone here can answer: I assume, since the fuel pump is in the tank, that the blow-off to regulate the pressure in the fuel lines is also in the tank. Going by the drawing, the two connectors are one each for the two throttle bodies. Is that correct? Edit: strike that one. I've had a look at a workshop manual. In there, it says that the "outer" line is the feed to the injectors, and the "inner" one is the return. How much pressure is in the fuel lines? Given that the fuel lines are held on by clamps, it can't be that much, can it? What is the considered opinion: should tightening the clamp (assuming that it is sitting correctly and clamping enough of the fuel line...) be sufficient to solve the sweating problem, or do I urgently need to have a closer look? I'm assuming, for the moment, that the hose is really fuel line, and not just some rubber hose that might be starting to disintegrate due to the effects of the fuel. One further question: from what I have read, the connectors that come off the bottom of the fuel pump, i.e. out the bottom of the tank, are a bit fragile, and need to be handled with care. With regard to that, I wasn't too keen on trying too hard to push the fuel line further up the nipple. Is that correct, or am I being too cautious there? Thanks in advance Mick Link to comment Share on other sites More sharing options...
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