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  1. #1 Duke 390 Oil Leak Just over 2000km 
    C-Moto Senior Asymptomatic's Avatar
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    Jan 2016
    Location
    Changchun China
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    240
    Hello guys,

    FYI I am no mechanic but my Duke 390 has a small oil leak. Not sure if I can leave it alone or if I should get to the mechanic and have it checked out. Keep in mind the closest KTM dealer is a 7 hour ride away.

    Either way I think it is leaking from the silicone on these tubes coming out. I am pretty sure the tubes have wires in them. One for the Magnetic coil and the other for the gear positioning sensor but I am not 100%. These picture are 1 week after a full wash to give you an idea how long this build up took. I hope it is not the seal :( Only 2000km on the bike so far.

    Should I worry and get to a dealer?
    Not enough to care?
    Should I try to reseal the tubes with new high heat silicone?
    What would you do?

    20160529_131847.jpg20160529_131852.jpg
    “I have never been lost, but I will admit to being confused for several weeks"
    Triumph Speedmaster, Di ping xian da pao che 5000W, KTM Duke 390, Dayang DY150, Jencheng 150 Razkull Clone
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  2. #2 Re: Duke 390 Oil Leak Just over 2000km 
    C-Moto Regular
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    Jun 2015
    Location
    Perth Australia
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    90
    Ouch ! that is not good , it will only get worse , at 2k it must be due for a service ? where do you take it for these ? surely they can fix the leak under warrenty .

    It should not have this , make a noise !!!.

    Brian.
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  3. #3 Re: Duke 390 Oil Leak Just over 2000km 
    C-Moto Senior Asymptomatic's Avatar
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    Jan 2016
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    Changchun China
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    240
    I do my own service. Dealer is 7 hours away. Turns out I was right. Just a rubber grommet where the gear positioning sensor goes into the case. Used some silicone and it was as good as new!
    “I have never been lost, but I will admit to being confused for several weeks"
    Triumph Speedmaster, Di ping xian da pao che 5000W, KTM Duke 390, Dayang DY150, Jencheng 150 Razkull Clone
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  4. #4 Re: Duke 390 Oil Leak Just over 2000km 
    C-Moto Regular
    Join Date
    Jun 2015
    Location
    Perth Australia
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    Glad you got it sorted , oil leaks make a horrible mess and can be hard to trace sometimes .
    Brian.
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  5. #5 Re: Duke 390 Oil Leak Just over 2000km 
    C-Moto Noob
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    Mar 2021
    Location
    India
    Posts
    2
    earlier I faced the same issue on my RC 250. The KTM RC 250 uses the same oil grade as the bigger Duke and RC's (source: https://www.mototechindia.com/ktm-rc-250/). Mine was leaking near the exhaust bend under the frame. It was very subtle at first, I noticed it after I washed my bike, I spotted a patch of oil with dust. Thankfully got it sorted.
    Last edited by chirslymn33; 04-08-2021 at 07:13 PM.
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