Unidentified part - what is.... - KTM Duke 390 Forum
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post #1 of 17 Old 01-10-2017, 09:54 AM Thread Starter
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Unidentified part - what is....

...this in the pictures below? I don't see this black hose cable tied to the orange frame on any other D390. Just spotted it today.







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post #2 of 17 Old 01-10-2017, 11:39 AM
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The black tube in your photos is not a part that is fitted to North American market bikes. I believe it is likely a component of some apparatus that takes the place of the evaporative canister fitted to NA bikes, the latter designed to capture fuel tank vapors before they escape into the atmosphere. In countries where emissions regulations are different/less strict, KTM does not fit evaporative canisters to the 390: What they do fit - in certain markets - is something that includes this tube. Probably some sort of venting set-up. I don't recall that this tube is fitted to EU market bikes, either.

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post #3 of 17 Old 01-10-2017, 12:55 PM
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That black tube is not fitted on EU versions either . Can you determine as where it leads to , the nature and material would suggest petrol overflow . Usually these are fitted inside the tank shroud .
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post #4 of 17 Old 01-11-2017, 10:22 AM Thread Starter
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The tube meets the bottom of the fuel tank plastic then turns sharply backwards before going directly up towards the fuel tank. It goes beyond reach up on the left hand side in front of where the knee goes. Fuel overflow? Vapour release in hot weather?



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post #5 of 17 Old 01-11-2017, 10:23 AM Thread Starter
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post #6 of 17 Old 01-12-2017, 07:53 AM
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Larry, per PM, checking the Asia market parts fiche, probably #17 ? Can probably go back inside tank shroud?

Andrew



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post #7 of 17 Old 01-12-2017, 03:16 PM
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It's a vent line for the evap canister ("Evappa-crappa") Not on other fiches because other countries aren't stupid enough to foist it upon their citizens (YMMV)

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post #8 of 17 Old 01-12-2017, 11:04 PM Thread Starter
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Quote:
Originally Posted by John in PA View Post
It's a vent line for the evap canister ("Evappa-crappa") Not on other fiches because other countries aren't stupid enough to foist it upon their citizens (YMMV)
It's safe then to move it the other side of the orange frame? Heat from greater proximity to the exhaust isn't going to blow me up?
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post #9 of 17 Old 01-13-2017, 10:16 AM
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If you move it, be sure it's in a place where, if liquid fuel came out, it wouldn't land on something HOT. Don't know specifically on the KTM 390, but on some bikes if fuel tank is grossly overfilled, liquid fuel can end up in evap cannister. Subsequent leakage out vent tube yielded spontaneous combustion of some Can AM Spyders with total loss!

I removed all my evap stuff and rerouted hoses down the frame so that both tank overflow and venting is open to the ground, in a safe, cool area of the frame distant from any part of the exhaust system.

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post #10 of 17 Old 01-13-2017, 11:42 AM
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There should be a small clip on the inside edge at the left/front/bottom edge of the gas tank cover. The clip is held on with double-sided tape and that's where this tube should reside. My guess is the clip fell off while riding and someone cable tied the tube to your frame instead. The factory location is further away from the hot motor so you may want to get that clip.
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