Fuel Vent Line Issues
- Thread starter ChUcK
- Start date
Maybe the chain is flinging off something under there and looks like its leaking? I don't know. If the fuel tank is very full maybe it could slosh out a little. The coolant overflow is down there somewhere too. Not familiar with the construction of the 6R tank but in some tanks the vent lines run internally in the tank and if they crack or leak inside, fuel will get inside the vent line and leak out. Can't check anything now because my kid has the 6R and he will probably keep it. I'd clean the bottom off real clean and put some paper underneath to try and see exactly where it comes from and what the material is. Taking it in to the shop is another possibility.
Don't know what would seem to melt the hose ends??? The one I had never leaked a drop of anything so you got me on this one.
Don't know what would seem to melt the hose ends??? The one I had never leaked a drop of anything so you got me on this one.
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Hmmm, I don't park my bike in the sun, but it does get parked in an enclosed (on 3 sides) carport that might not offer much air circulation to help cool down the bike. Maybe the hot engine is causing the fuel tank to vent built up pressure?
I know the breathers are supposed to do their jobs, I've just never seen it do its job so well and so much. Sorta like if your Roomba starts to wear holes in the carpet, is it malfunctioning or is it just so damn good at its job?
I know the breathers are supposed to do their jobs, I've just never seen it do its job so well and so much. Sorta like if your Roomba starts to wear holes in the carpet, is it malfunctioning or is it just so damn good at its job?
Mine does the same, normal! I like to blame the deterioration of the hose due to ethanol in the fuel. Alcohol base fuel is a killer for rubber line... not big deal. Every now and then I cut the beat up part of the hose. When it start to get a little short I will change the hoses. I try to find something a little more resistant.
alaskanflyboy
Premium Member
My money would be on the ethanol as well. It's been causing havoc on a lot of engines, my car included. It ate the head gasket out and followed up shortly after with my intake gaskets. I know others that have had rubber corroded out from the inside of the engine as well. So to say the fuel vents are melting, I'm not surprised. Most of the mechanics I know seem to hate the new 10% ethanol fuels.
I'm having the same problem..they told me it was normal and that the fuel tank is building pressure then venting thru the down tube and condensing into a oil?gas like fluid. Not happy about it but they say there is nothing they can do about it..
Tis normal... That is how they are all designed.
Someone mentioned vent lineS. I was just cleaning my bike (removing the outer layer of bugs) and noticed that there is only ONE line in the stupid round holder thing in front of rear break lever. I'm certain there used to be two. Can someone with a California FZ6R confirm this?
I looked up under the tank, and saw TWO different vacuum line connectors that were not disconnected. I assume one of these is supposed to have a longer hose attached to it and run down through the round holder thing, correct? If so, I wonder what the second one is for
UPDATE: I checked the service manual (page 2-59). The two hoses that are supposed to be in the clamp are the fuel tank breather hose and the fuel tank drain hose. Neither of them look like the disconnected vacuum lines I saw. Those look like synchronizing hose #3 and #4, labeled (4) and (5) on page 2-65. From this write up, it looks like those are just supposed to be capped off, but they're not. I guess next I need to take a look at the left side of the bike to see if those are uncapped as well.
I looked up under the tank, and saw TWO different vacuum line connectors that were not disconnected. I assume one of these is supposed to have a longer hose attached to it and run down through the round holder thing, correct? If so, I wonder what the second one is for
UPDATE: I checked the service manual (page 2-59). The two hoses that are supposed to be in the clamp are the fuel tank breather hose and the fuel tank drain hose. Neither of them look like the disconnected vacuum lines I saw. Those look like synchronizing hose #3 and #4, labeled (4) and (5) on page 2-65. From this write up, it looks like those are just supposed to be capped off, but they're not. I guess next I need to take a look at the left side of the bike to see if those are uncapped as well.
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Hey Martin,
I know this is an old thread but was wondering if you know of any better aftermarket breather tubes? My one tube was already broken in 2 spots so I cut it off a lil bit (maybe 2 inches). I would like to see if there is a better aftermarket solution. I thought I saw a pic somewhere of chrome looking tubes.