Engine Oil Leaks - KTM Duke 390 Forum
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post #1 of 33 Old 08-05-2014, 05:21 PM Thread Starter
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Engine Oil Leaks

Is it all of these bikes that are a little greasy?
After any decent ride there is always oil seepage around the oil filter cover.
This happens with my 200 and 390 dukes although the 390 is worse.
I dont use the lower fairing/guard and would prefer to leave it off. But have KTM put it there to avoid any oily back tyres rather than fix the problem?
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post #2 of 33 Old 08-05-2014, 07:57 PM
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It used to happen on my EXC until I worked out what was causing it. When you change the oil and remove the filter the bottom thread gets filled with oil. I started removing that with a rag or paper before putting the cover and bolts back in. Hasnt happened on either bike since.
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post #3 of 33 Old 08-05-2014, 10:23 PM Thread Starter
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So yours remain completely dry?
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post #4 of 33 Old 08-05-2014, 10:49 PM
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Yep, I changed the EXC's on Friday then rode all Saturday with the kids. I havent washed it yet.



I used to get an oil spread all the way around until I started soaking up the oil in the threads.
I didnt pic my finger but a rub underneath was dry
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post #5 of 33 Old 08-06-2014, 05:52 AM
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Mine gets a leak all around the oil filter after a good hard run.
Weeps at the head gasket area too.. This too after a replaced gasket - so pretty much gotta live with it.
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post #6 of 33 Old 08-06-2014, 06:19 AM Thread Starter
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Pain in the butt
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post #7 of 33 Old 08-06-2014, 07:07 PM
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Pain in the butt
correction.... PITA*
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post #8 of 33 Old 08-20-2014, 10:33 AM
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hi guys, my duke is doing good, but i still face some issues, like oil seapage near the spark plug area, any advice for that?
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post #9 of 33 Old 08-26-2014, 01:24 PM
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hi guys, my duke is doing good, but i still face some issues, like oil seapage near the spark plug area, any advice for that?
Is it spark plug area, or the head? Head leaks are often reported, and near the valve rubber caps, is that what you meant to say?

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Honda CBR 250R ABS | Suzuki Shogun 2S | Hyundai Accent GLS 1.6 ABS | KTM Duke 390 | Next ?
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post #10 of 33 Old 08-26-2014, 01:32 PM
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yeah, valve rubber i guess, every time i go to service station they change the rubber, and after a few long rides i see oil again
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