Strange noise

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NewKDX
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Strange noise

Post by NewKDX »

The buzzing noise happens when high RPM goes back down to Idle. This is a new noise I haven't heard it before.

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ICRage42
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Re: Strange noise

Post by ICRage42 »

I dunno sounds like that exhaust bolt is tight but not tight on bracket and seems to shutter to the sound on video to me. For shits an giggles check that. If you look at the video Im talking about the expansion pipe at the kicker bracket. If you notice it seems loose in a sense. The kdx loves to rattle bolts loose it prefers mud Loctite :mrgreen:
If you cant fix it with a hammer, you have an electrical problem.
newbbewb
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Re: Strange noise

Post by newbbewb »

sounds like loose pipe bolts to me. for me, I loctite blue everything. every 2t I've had likes to back bolts out, even the bolts that hold plastic on the bike, and it never happens in the garage or backyard during testing, it's always on the trail.
93 kdx200-Highly modified
89 kx125/kdx200E engine
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Joshmcmillan
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Re: Strange noise

Post by Joshmcmillan »

+1 to loose bolt somewhere
07' CR450X (Main Bike)
07' KX125 (Completed basket case rebuild, for sale)
88' KDX200 (Not sure yet, runs but with rattly top end)
91' CBR250RR
Old Bikes: 97' KDX200, 00' RM125, 85' XR350, 94' KDX200, 02' CR80, 82' XT250, 98' CT200
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diymirage
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Re: Strange noise

Post by diymirage »

maybe this is because I never see my pipe when im on the bike but doesn't it seem to vibrate more then it should ?
(look at the rubber mount doohickey and you'll see)

im sure they do vibrate because all those doohickeys on both my bikes are broken but it seems excessive to me...I agree on the loose exhaust/bolt
newbbewb wrote:DIYmirage has it right.


-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike
KDXrider32
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Re: Strange noise

Post by KDXrider32 »

On mine it developed the same noise kinda a buzzing sound ! it ended up being the bushing under the rear fender at the fender frame mount ! :cool:
clinton
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Strange noise

Post by clinton »

Mine sounded like that after an enduro.It turned out to be a motor mount up front.The nut was gone.
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