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I still have not found time to open the airbox and look for obstructions there or in the line. Hopefully I'll be able to this afternoon. |
Sorry for the trouble your having but thats a cool picture.
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You won't find an obstruction because it is operating as designed.
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http://i729.photobucket.com/albums/w...r/oil_sep2.jpg Since fuel is collecting in the bottom tube, there must be either an obstruction in the partial vacuum line to the air box, or the oil separator is defective. :shrug: |
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Do you notice the fuel collecting only after longer stints at high engine rpms? |
I definitely see more fuel collecting after long, high RPM runs. When I finished our 4 hour ride to Estes Park yesterday, the tube was full to the top. I think some fuel collects all the time and slowly drops out.
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As I see it The separator does its job as described and allows vapors by into the air box until high RPM's.In that scenario Maybe that is why the stand pipe is there to collect the solids that accumulate at High RPM's.Without the liquid standpipe than the air box could become over saturated with raw fuel instead of vapors.We may be all overthinking this one.
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You could look at it as spare bonus fuel. Handy when you run low. :D
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I use my RX3 mostly for commuting and my freeway portion is at or near redline, but I haven't had the fuel issue that you have, Detours. Interesting problem.
Just now, while writing this reply, I thought back to when I first received mine and remembered noticing that the U shaped clamp (just above the clutch release lever) on the left side of the cylinder appeared to be bent too tight. Looked as if it was skwooshing (technical term) the hose quite a bit, so I dis-skwooshed it a little until I felt it wasn't pinching the hose but would still hold it snug. Have you given that a look? I'd go take a picture but I just got out of the shower, it's 91F, and don't really feel like putting clothes on. Neighbors have kids, you know. Still, if your oil is smelling of fuel, I think you have some other problem than just a breather/separator. Injector dribbling when the engine is off? Interesting. |
My bike experiences the same effects as detours bike does.
Standpipe is there for a reason. When it's full you might have 2oz.of fuel...so what. If the bike runs fine and maintains good gas mileage(60-65 mpg) Then you need not worry. |
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I strongly encourage you to examine the oil separator, and the hose leading to the air box. However, if you wish to collect fuel in the drain tube, it's not the worst thing in the world. ;) Nevertheless, the oil separator was definitely not designed to operate in this manner. |
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:lol: |
I believe that it is designed to capture some combustible fuel.You say it is a problem and I say it is not.I believe it does pass gas fumes to the air box for 99% of it but at high speed some fuel falls out of suspension and that is one of the jobs of the stand pipe...to collect it.That is my theory FWIW.
But I have enlisted the help of a guy who could probably clear this up, Joe Berk of CSC.He rode 5,000 miles at 8,000 RPM's(also the name of his book he just wrote)With Zongshen engineers riding along with him and I'm thinking he may have some insightful info into this. I have not seen him on this forum but he does frequent the ADV rider thumper section under our bike. I went on there and posed the question to him so maybe we will get an answer beyond the speculation. |
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