Fuel leak on 350i
Discussion
At wednesday when I visited my friend to show Kiila for him, she started leaking fuel big time - after starting the car the fuel was pouring over from the back of the car with incredible amounts. My first thought was that the reverse fuel line would be gotten off fro the fuel tank. We towed her to my home and the next day I lifter her up and started the engine to get better view of where she's leaking... and nothing, not even a smalled drop. I kept checking the rear end from below and all the fuel traces are at the low rear end, there's no showing of the fuel spilling from somewhere eg. over the tank - it looks pretty much like the only place possible to generate the leak would be one of these hoses:
http://aero.1g.fi/kuvat/TVR%20350i/DSC00641.JPG - they are located in the very rear left corner, behind the left rear wheel. I could think that one of them is the fuel tank breathing hose and if there's pressure on the tank, for some reason it would pour over from there.
Any ideas of what's wrong?
http://aero.1g.fi/kuvat/TVR%20350i/DSC00641.JPG - they are located in the very rear left corner, behind the left rear wheel. I could think that one of them is the fuel tank breathing hose and if there's pressure on the tank, for some reason it would pour over from there.
Any ideas of what's wrong?
It depends on a number of things, did the car have the tanks full, was the car parked on the slope. Must admit not sure what the two hoses are as my wedges only have one hose. As for the vent hose on the 400 it comes off the filler neck runs behind the carpet on the boot bulkhead with a tee from the top of the tanks and then drops down. The pipe on the bulkhead is looped high above the filler neck but it has been know to start syphoning when full or parked on gradients.
.Have had the same when parked up (on a slope) on a hot day just after filling up. I now only ever brim it when I know I'm going to be driving a good few miles, otherwise I just fill it till the pump cuts out half a dozen times. A dozen cut outs with 10 second pauses in between normally brims it! Something not quite right there and I've been meaning to look into it since I bought the car.
Hi Mate.. Just wondering where those pipes are coming from as surely you dont have two atmospheric breathers?..I might be wrong but on the 280 i have one from the tank to the filler neck and then one from the filler neck that goes into the boot and around to the other side of the car to atmosphere..They look like they have been cut off and not fitted properly to anything..Do you have the wedge manual PDF?..If not i can send it to you..Cheers..Ziga
Hi Zig. Neither of the hoses look like they had just fallen from somewhere - see the holes they come through, they obviously have routes and they're planted there. I do have some PDF's, but they won't open on all PDF readers (surprisingly, they won't open with Adobe Reader - I think I've got them open with Xpdf 
).
).I think I know the problem. I've also been wondering a bit why it feels like the tank wouldn't always fill up as it should. The tank is divided in 2 sections, connected with hoses. If these hoses are jamming for some reason, the levels on the tank sections aren't equalized as fast as they should be (ie. in real time). The reverse line comes to the left tank (which is the side the fuel was leaking) and if the left tank section isn't emptying as fast as the fuel is reversing, it spills over.
I think I'll check the tank section connecting hoses during the winter (if not earlier).
I think I'll check the tank section connecting hoses during the winter (if not earlier).
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