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Old 05-28-2014, 12:30 PM   #1
attaboy OP
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Question Bizarre Valve Noise -video- KTM 950 ADV

Calling your wisdom Inmates
My 950 ADV is noisy as hell. Here's a video to better demonstrate, Please suggest your best fix but read below before:

I just did all this:
- I read the Wisdom of the 950.info website, along with possible causes...
- Valves are in spec
- Oil Screen clean
- Oil filter clean, no coolant, no distortion
- Check-valve below oil reservoir is very clean, small filter as well, and ball-spring seems ok (!!)
- Fresh oil Motul 5100 15w50, proper level 50% mark
- Cam Chain tensioners are both at 48 mmm
- New Oil sensor has been screwed in
- New NKG iridium spark plugs CR8EIX
- Water pump has 2000 km, doesn't leak, running Engine ICE and no foam pudding in crank vent tube.

Idiot OIL light still blinks... is it the oil "by-pass" ?? I am getting tired at changing everything in hope to find the culprit !!!!!

http://youtu.be/uDUcLyVq_-w
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Old 05-28-2014, 02:00 PM   #2
Gustavo.Ramos
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That sounds like my 950 when the locking clip of the oil pressure valve came off (under the clutch basket). In +4k ervs, would be ok, but under that would rattle like crazy... since the locking clip came off, the spring came off too, and the piston that acts as valve was letting the oil pass when in normal conditions would be closed thus making more oil go to the heads.

Remove the oil screen and see if there is a spring pointing at it. don't worry too much the spring wont come off totaly neither the piston. the locking clip and washer... thats another story!
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Old 05-28-2014, 02:03 PM   #3
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New oil filter? What make?
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Old 05-28-2014, 02:23 PM   #4
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I'll have to check for the filter. I still have a new K&N green box on my bench, but also a pink-red one.

Also thanks Gustavo, the screen is clean, i don't see anything near or in it. Do you mean the little spring hiding behind the main cover, close to the oil pump?
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Old 05-28-2014, 03:38 PM   #5
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The spring+piston is contained where the red arrow points

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Old 05-28-2014, 08:00 PM   #6
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Quote:
Originally Posted by attaboy View Post
I'll have to check for the filter. I still have a new K&N green box on my bench, but also a pink-red one.

Also thanks Gustavo, the screen is clean, i don't see anything near or in it. Do you mean the little spring hiding behind the main cover, close to the oil pump?
Go buy an OEM filter, put on side stand...you wont lose much oil, and any contaminants will run out. Throw the K&N filter in the bin.....They are too restrictive for the LC8....

http://www.ktmforum.co.uk/adventure/...ml#post1749066
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charlie264 screwed with this post 05-29-2014 at 04:57 AM
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Old 05-29-2014, 06:53 AM   #7
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K&N to restrictive? damn...

I also have an HiFlo model 158 (green-black box) on the bench. Its been sold to me by ADV experts apparently, should I trust this one will work?

***EDIT: Charlie I read all you other thread... Maaaan. I will give it a shot. Talk about ripping a freakin' bike apart when the filter is guilty? I'll follow up with the results, because other than the by-pass spring everything else has been changed. Also, do you guys put 10w50 or 15w50 in? right now here its 15 celcius outside.
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Old 05-29-2014, 07:04 AM   #8
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Quote:
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K&N to restrictive? damn...

I also have an HiFlo model 158 (green-black box) on the bench. Its been sold to me by ADV experts apparently, should I trust this one will work?
Read the thread, K&N are better quality, that's the problem. Order an OEM, stick the Hi-fo in....if it eliminates the problem....there is your solution, good till OEM turns up. If not then it could be the pressure release valve....I doubt very much....
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Old 05-29-2014, 08:01 AM   #9
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i could be wrong but it sounds like a cam chain to me? when my 250f KTM cam chain tensor was going out it sounded just like this. keep in mind my computer speakers suck so I could be far off on the sound.
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Old 05-29-2014, 08:14 AM   #10
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mmm yeah but the Cam Chain Tensioners are both in spec at 48 mm each.

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Old 05-29-2014, 08:51 AM   #11
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My original 950 engine kept stretching cam chains. I've no idea why, but every 20,000 miles it'd get horribly noisy, the oil light started flickering at idle, classic symptoms that most people would say indicate a failed water pump seal.

I changed the cam chains twice, but then I got sick of it and bought a newer engine - a 2008 model I think. This engine is much quieter and I've put another 40,000 on it without any similar problems.

My theory is that if the cam chains stretch, the tensioners will protrude a bit further into the engine, and maybe that allows oil to leak past them, hence the oil pressure light flickers. Or maybe it's the chains flapping around (as they are not properly tensioned) that causes the CCTs to move and thus causes fluctuations in the oil pressure. Who knows? But the point is, it seems to be possible that low oil pressure at idle is a symptom, not a cause.

As for the oil filter ... it won't do any harm to run it without a filter for 5 minutes, that'd tell you whether the K+N is at fault. Oh, and I always use HiFlo HF158 filters, simply because they are what the local bike shop sells, never had any problems with them.
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Old 05-29-2014, 08:59 AM   #12
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Thanks UK_Mouse

Wow, you were NOT lucky man

But thanks for the tip about trying it without a filter for 5 minutes. I suppose since my engine is clean from all the recent mods and flushes it would be ok.
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Old 05-29-2014, 11:31 AM   #13
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Quote:
Originally Posted by attaboy View Post
Thanks UK_Mouse

Wow, you were NOT lucky man

But thanks for the tip about trying it without a filter for 5 minutes. I suppose since my engine is clean from all the recent mods and flushes it would be ok.
Run an engine without a filter...... a) its designed to have that restriction. b) If a bit of crud moves....blocks oil jets. c) irreversible damage.

Only every as a last resort.....
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Old 05-29-2014, 12:13 PM   #14
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Check your exhaust headers and pipes for pin hole leaks.
My bike sounded like that until I replaced the pipes. Sounds silly I know but thats all it was.
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Old 05-29-2014, 07:09 PM   #15
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Mine sounds like that for a few seconds but it always goes away, leading me to think cam chain tensioner might be be stuck? It has happened to others.
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