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Old 01-12-2012, 03:45 PM   #16
Gustavo.Ramos OP
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Quote:
Originally Posted by gefr View Post
Vibration could be affected from carb balancing. Worth checking this as well.
Cheers.
Hi,
Checked that too. Not much improvement, although i notice these carbs get out of balance fairly easy. Am i the only one noticing it?
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Old 01-12-2012, 05:49 PM   #17
jeepman256
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same problem

Just bought a 04 with 25k and it rattles like crazy , sounds nothing like the other two 2005.5 it sets beside...I,d been wondering if the sound was normal , sounds like that,s just an older model thing
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Old 01-12-2012, 09:47 PM   #18
GZERO
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the first thing before anything, check the oil pump regulator, most of the problems start here.
I would recomend taking it apart (taking the clutch basket out) and pulling the cover on the pump, that way you can clean everything and see if the piston has marks and to meassure the spring. If not, just buy the cover (it comes with the regulator built in and change it.

After that, the second thing to look is the tensioners.
The third is the balance shaft to see if is properly armed ( i have seen cases in which the shaft came loose and it touched the timming chains)
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Old 01-13-2012, 03:48 AM   #19
Gustavo.Ramos OP
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Quote:
Originally Posted by GZERO View Post
the first thing before anything, check the oil pump regulator, most of the problems start here.
I would recomend taking it apart (taking the clutch basket out) and pulling the cover on the pump, that way you can clean everything and see if the piston has marks and to meassure the spring. If not, just buy the cover (it comes with the regulator built in and change it.

After that, the second thing to look is the tensioners.
The third is the balance shaft to see if is properly armed ( i have seen cases in which the shaft came loose and it touched the timming chains)
I think it'll be the way to go.

Let's see if i'm not getting into more trouble. getting KTM parts around here is a a time consuming experience.

thank you all.
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Old 01-13-2012, 05:29 AM   #20
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KTM made a ton of mods to the engine on "later" models, a lot of which seemed to be aimed at quieting the things down so so many people weren't thinking their motor was about to grenade itself.

Chris
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Old 01-13-2012, 09:15 AM   #21
keener
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cam chain tensioners?

Cam chain bouncing back and fort is a commonly noticed noise in LC8. That might be what you are hearing.

Im no expert at this ... here is what I learned so far... cam chain tensioners (#600.36.003.000) are basically pushing a rail that pushes the cam chains to keep them tight and not vibrate much. It is nothing but a spring loaded cylender that has an opening at the top to let engine oil to help the spring (hydraulically assisted). There a tensioner per cylinder.

When you start up the engine it takes a few seconds, sometimes more to fill them up with oil. So you will hear the cam chain bouncing for while. This can be more sever if the bike has not been running for hours or if you turn the engine manually (moving the bike when its in gear and off, even just a bit), the next time you start up you will hear loader cam chain noise right after start. I'm told it is normal.

If the noise doesn't go away after idling for a while or reving the engine, or it comes and goes as the bike is running idle, you might want to change the tensioners.

You need to remove air box to get to them.

$48 each at ktm-parts. http://www.ktm-parts.com/mm5/merchan...de=60036003000
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Old 01-13-2012, 11:02 AM   #22
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Quote:
Originally Posted by keener View Post
Cam chain bouncing back and fort is a commonly noticed noise in LC8. That might be what you are hearing.

Im no expert at this ... here is what I learned so far... cam chain tensioners (#600.36.003.000) are basically pushing a rail that pushes the cam chains to keep them tight and not vibrate much. It is nothing but a spring loaded cylender that has an opening at the top to let engine oil to help the spring (hydraulically assisted). There a tensioner per cylinder.

When you start up the engine it takes a few seconds, sometimes more to fill them up with oil. So you will hear the cam chain bouncing for while. This can be more sever if the bike has not been running for hours or if you turn the engine manually (moving the bike when its in gear and off, even just a bit), the next time you start up you will hear loader cam chain noise right after start. I'm told it is normal.

If the noise doesn't go away after idling for a while or reving the engine, or it comes and goes as the bike is running idle, you might want to change the tensioners.

You need to remove air box to get to them.

$48 each at ktm-parts. http://www.ktm-parts.com/mm5/merchan...de=60036003000

All that is right, but since the oil pump could be loosing its pressure trought the regulator valve (hence no oil pressure to the cam chain tensioners) thats why he would check that second after the pump.
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Old 01-15-2012, 10:18 AM   #23
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Here it is a small vid.

The sound isn't great, but i think you can hear it:

http://www.youtube.com/watch?v=3CfNy...ature=youtu.be

What do you think?
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Old 01-15-2012, 08:50 PM   #24
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If I didn't know better, I'd think I was listening to a video of my bike.
50,000mi. & still making noise!

Chris
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Old 01-15-2012, 11:41 PM   #25
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Quote:
Originally Posted by Gustavo.Ramos View Post
Here it is a small vid.

The sound isn't great, but i think you can hear it:

http://www.youtube.com/watch?v=3CfNy...ature=youtu.be

What do you think?
It's about the same as mine.. Sounds normal for me.
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Old 01-16-2012, 03:16 PM   #26
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Originally Posted by O.C.F.RIDER View Post
If I didn't know better, I'd think I was listening to a video of my bike.
50,000mi. & still making noise!

Chris
If you and Sumi say it sounds normal than i guess she's deemed to sound like a can of nails...

I'm in bad need for a decent ride

thanks
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Old 01-16-2012, 07:07 PM   #27
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Quote:
Originally Posted by Gustavo.Ramos View Post
Here it is a small vid.

The sound isn't great, but i think you can hear it:

http://www.youtube.com/watch?v=3CfNy...ature=youtu.be

What do you think?
Sounds just like mine; maybe even quieter. I think there may be a little more clatter from the clutch plates on the right side. Sounds good to me!
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Old 01-16-2012, 08:03 PM   #28
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Sounds about the same as my '06 with 25,000 miles!


I did have a vibration develop in the right handle bar. I thought it was carpal tunnel in my wrist or something.....

I found the problem this weekend... Damn, if the fiber lock nut holding the handle bars hadn't fallen off on the right side and the left side was loose. Tightened back up and my hands felt great all day. Good thing I didn't kill myself.
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Old 01-16-2012, 08:58 PM   #29
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Quote:
Originally Posted by Gustavo.Ramos View Post
...i notice these carbs get out of balance fairly easy. Am i the only one noticing it?
If this is the case... try Balancing them at about 4 or 5k RPM.

Done this with mine and it has less vibration than my inline four.
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Old 02-22-2012, 12:23 PM   #30
jvg
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Quote:
Originally Posted by GZERO View Post
the first thing before anything, check the oil pump regulator, most of the problems start here.
I would recomend taking it apart (taking the clutch basket out) and pulling the cover on the pump, that way you can clean everything and see if the piston has marks and to meassure the spring. If not, just buy the cover (it comes with the regulator built in and change it.
I have seen this mentioned before (that the cover comes complete), but no part # for it.
In all part manuals i look at the cover, spring and piston have separate numbers.

Is this the correct part, i guess CPL = Complete?
60038010133 - PRESSURE PUMP HOUSING CPL. 10

/j
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