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Howling noise?
Posted: 06:57 pm Sep 28 2010
by rbates9
I have had a howling noise coming from the front of the bike. It has done it since I got the bike, no change from jetting, repacking, or gas mix. It only seems to do it during acceleration from about half to about full throttle? Any body else have this happen? I have boysen reeds fmf woods pipe turbin core 2 and the air box lid cut open. It will not do it sitting still and it has about 145 to 150psi compression. Any thoughts?
Posted: 12:23 am Sep 29 2010
by Mr. Wibbens
clutch
Posted: 06:47 pm Sep 29 2010
by rbates9
I'll bite, what about the clutch? the noise seems to be coming from the pipe. I have had the pipe off and cleaned it, it wasn't that bad but it was off. I also looked into the cylinder and it looked good on the back side and the piston looked good on the front side. I have done several compression test and they all were around 145 to 150 over the summer.
I'm not ruling any thing out but the clutch is working good, good feel and engages good with no slippage.
Posted: 12:09 am Sep 30 2010
by JoKDX220r
when you pull the clutch did the noise change ??
Posted: 02:45 pm Sep 30 2010
by rbates9
You can only hear it under a load and during acceleration.
Posted: 03:09 pm Sep 30 2010
by scheckaet
kips or water pump bearing?
Posted: 03:10 pm Sep 30 2010
by Indawoods
Big end bearing...?
Posted: 03:13 pm Sep 30 2010
by rbates9
Sounds like it might be time to take something apart.
Posted: 03:15 pm Sep 30 2010
by Mr. Wibbens
sounds like a clutch
Posted: 03:18 pm Sep 30 2010
by rbates9
What about the clutch??? Sliping? Draging? Two dead hampster's in it?
Posted: 04:14 pm Sep 30 2010
by Indawoods
I say.... 3.
Posted: 04:34 pm Sep 30 2010
by Mr. Wibbens
More likely a slipping clutch howling than it coming from your pipe, unless of course that is where the hamsters are located
Posted: 05:09 pm Sep 30 2010
by rbates9
Maybe it could use a new clutch. Thanks
Posted: 05:15 pm Sep 30 2010
by Mr. Wibbens
or different oil...
Posted: 05:15 pm Sep 30 2010
by bigerestblazer
ive had a connecting rod bearing make a howling sound between 1500 and 2500 rpms. swapped that out and it went away. not on a kdx but just a suggestion.
Posted: 05:18 pm Sep 30 2010
by rbates9
I have tried a few different oils and didn't notice a difference. What do the rest of you use for brands and wt.
Posted: 05:35 pm Sep 30 2010
by Mr. Wibbens
If it does it all the time it's probably a bearing
Usually, on my bike it will only howl while accelerating when the motor is fairly cold
But if you had an oil that's energy conserving it might do that
Posted: 11:02 pm Sep 30 2010
by JoKDX220r
if you want you can try to take a long screwdriver, put it on the case and try to hear where the noise is come from...
you can also try with this :
http://www.diseno-art.com/images_2/mech ... oscope.jpg
Posted: 01:01 am Oct 01 2010
by Mr. Wibbens
under $10 at HF
Posted: 06:28 am Oct 01 2010
by KarlP
You can only hear it under a load and during acceleration.
I'm trying to picture using a stethoscope under these conditions.
Thanks for the opportunity to offer a usefull comment
