sguerrero Posted January 22, 2016 Share Posted January 22, 2016 Guys, a couple of days ago I've notice it was dripping gas form a little tube(hose) right next to the kickstand. It was 4pm like 70F . I had a cover on. It was dripping a drop every second. I freak out ... today, the tank looks like someone is stealing gas. Do you know why that is? Link to comment Share on other sites More sharing options...
howlinhoss Posted January 22, 2016 Share Posted January 22, 2016 The hose is your gas overflow tube. Link to comment Share on other sites More sharing options...
Guest Ralph Posted January 22, 2016 Share Posted January 22, 2016 If you fill the tank the fuel will be cold from the underground tanks, due to the warm tank and outside temps it expands, this is not helped by having a nice hot lump of a engine directly below it, normally it would just vent vapour but if you filled it right up then only rode a short way the fuel it's self could be vented and that's what the pipe is for. Link to comment Share on other sites More sharing options...
Beemer Posted January 22, 2016 Share Posted January 22, 2016 If you over fill your tank or if gas expands in your tank it will come out that overflow tube. Now ask yourself how much gas you put in your tank? Did it come up past the metal plate with the hole in it for the nozzle when you filled it? If so that may (probably is) be the problem. Good luck and let us know what you find out. Beemer Link to comment Share on other sites More sharing options...
sguerrero Posted January 22, 2016 Author Share Posted January 22, 2016 The dripping has stopped , since the tank is at 1/4 now. The next trip to the gas I will fill it up 3/4. I'll let you know the outcome Link to comment Share on other sites More sharing options...
rick Posted January 22, 2016 Share Posted January 22, 2016 Well, if your gas mileage has really dropped 30% as it states in the title, I'm thinking this is not because you overfilled the tank. There's no reason for the fuel to syphon out until the tank only has 1/4 level left. Have you ever noticed any air movement sounds when you open the fuel filler - does it pop open or do you have to lift on it when the cap is unlocked? You might have a leak at the fuel pump plate - I've not paid much attention to stuff under the tank, but it might be worth a look if it continues to leak when there's a 'full" tank. If it continues to drip, take the faux tank covers off and poke in there with a rolled up paper towel to see if you can find an origin for the drips. Link to comment Share on other sites More sharing options...
cndnmax Posted January 22, 2016 Share Posted January 22, 2016 Is it actually commit out of the hose or just running down the outside of the hose? Check all the connections under the tank. Link to comment Share on other sites More sharing options...
Guest Ralph Posted January 22, 2016 Share Posted January 22, 2016 If it's gone from nr full to 1/4 tank then it must be more than expansion Link to comment Share on other sites More sharing options...
rick Posted January 30, 2016 Share Posted January 30, 2016 any luck on resolving this? Link to comment Share on other sites More sharing options...
Beemer Posted January 30, 2016 Share Posted January 30, 2016 Wow! It kept leaking all the way down to 1/4 tank from a fill-up?! I didn't expect that. It dripped way more than it should've for just gas expanding or being overfilled. That's a serious leak so be careful. Been a few days now so what's the word on it? Beemer Link to comment Share on other sites More sharing options...
cndnmax Posted January 30, 2016 Share Posted January 30, 2016 Wow! it kept leaking down to 1/4 tank?! I didn't expect that. It dripped way more than it should've for just gas expanding or being overfilled. That's a serious leak so be careful. Gas everywhere! It could very well be a leak from the fuel line connections. Once the gas is at 1/4 tank there's not enough head pressure to keep leaking. Link to comment Share on other sites More sharing options...
Beemer Posted January 30, 2016 Share Posted January 30, 2016 cndnmax "It could very well be a leak from the fuel line connections. Once the gas is at 1/4 tank there's not enough head pressure to keep leaking." That's what I was thinking. BTW, Nice pic! lol! I knew Cage was dumb but riding with a gas leak?!!! Beemer Link to comment Share on other sites More sharing options...
rick Posted January 30, 2016 Share Posted January 30, 2016 Once was a time that BMWs, Triumphs and Aprilias came with a plastic quick-disconnect in the return fuel hoses. They were notorious for breaking and then allowing gasoline to spray all over a hot motor. My Futura's fitting had a 90 degree elbow that failed enough that Aprilia was forced into a US (only) safety recall. And only the elbow half at the TB was replaced. Many of us opted for metal in both halves long before the official NHTSA recall. I still hav my recall notice - never acted on as min is now even safer. Sadly, there were quite a few toasted Futuras in Europe - likely due to a failed hose fitting. Those guys never knew the danger. Link to comment Share on other sites More sharing options...
sguerrero Posted February 1, 2016 Author Share Posted February 1, 2016 Well, apparently the problem stopped without any of my intervention. I did check all the fueling connections, hoses and everything seems OK. I went to the mechanic, he said "Nothing is wrong". One key value to identify leaks is MPG. Conclusion. It could be an issue with the device inside the tank that measures how many fuel there is left. Since it will require a couple of days to open and close the bike. I decided to pay close attention when I was noticing the most fuel reduction and work from there. Link to comment Share on other sites More sharing options...
rick Posted February 1, 2016 Share Posted February 1, 2016 been my experience, especially with such a small tank, that the best way to keep tabs on fuel used is to see how much can be added to the tank after X number of miles. The gauge is there just to help you not run out of gas somewhere So, it's stopped dripping? Link to comment Share on other sites More sharing options...
cndnmax Posted February 1, 2016 Share Posted February 1, 2016 been my experience, especially with such a small tank, that the best way to keep tabs on fuel used is to see how much can be added to the tank after X number of miles. The gauge is there just to help you not run out of gas somewhere So, it's stopped dripping? Yeah the other day my average MPG reading was 2mpg. So I'm not putting much trust on the accuracy of those readings lol. Link to comment Share on other sites More sharing options...
sguerrero Posted February 3, 2016 Author Share Posted February 3, 2016 No more dripping. Link to comment Share on other sites More sharing options...
sguerrero Posted February 11, 2016 Author Share Posted February 11, 2016 Actually the dripping continues. The trigger is direct sunlight hitting the tank. Around 3-4sh is when the sun it is at its wormest were I park the bike. The tank at 50% full and still is dripping through the hose right next to the kickstand. Link to comment Share on other sites More sharing options...
sguerrero Posted February 11, 2016 Author Share Posted February 11, 2016 I will have to pay for parking if I want shade. Link to comment Share on other sites More sharing options...
cndnmax Posted February 11, 2016 Share Posted February 11, 2016 Pull the tank off and see if there's any fittings that look like they are leaking or are damaged. Link to comment Share on other sites More sharing options...
Beemer Posted February 11, 2016 Share Posted February 11, 2016 Still dripping at 50%, something just doesn't seem right. I've never had a bike do that. Beemer Link to comment Share on other sites More sharing options...
sguerrero Posted February 11, 2016 Author Share Posted February 11, 2016 Well I did pull the plastic covers to make sure the hoses were fitted correctly. There is no leakages from other places than this hose. So I'm assuming everything is OK. Link to comment Share on other sites More sharing options...
rick Posted February 11, 2016 Share Posted February 11, 2016 are you in California?? Link to comment Share on other sites More sharing options...
Global Moderator sorkyah Posted February 12, 2016 Global Moderator Share Posted February 12, 2016 This seems rather odd.... that hose is connected to the filler neck to prevent overflow from going inside the plastics and ruining them There shouldnt be any fuel coming out unless you've freshly filled up Even then there shouldnt be much coming out Id recommend taking it back to the mech if you can If you're under warranty tell em you want a new tank because it has a care porosity issue ATGATT... ATTATT, two acronyms I live by. Link to comment Share on other sites More sharing options...
YZEtc Posted February 12, 2016 Share Posted February 12, 2016 Park it in the shade and see if it does it then. I've had bikes do this with the sun beating down on the fuel tank - just a couple of drops over the course of the whole afternoon. Link to comment Share on other sites More sharing options...
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