Odd noise on 900 cbr

**el_scor_cho** · 16th April 2010, 13:15

Hey all, recently my 1997 cbr started making an annoying noise when slowing down. for eg, pulling up to the lights from about 20k/hr to just before 0 there is an odd noise sounding like chain drag but commin from the engine,

usually stops before i come to a stop but the other day it continued even when in neutral so something to do with engine. chain is right tension and wheels alligned correctly. any help or anyone with exp with such an issue would be awesome

**Coldrider** · 16th April 2010, 13:35

clutch rumble?

**el_scor_cho** · 16th April 2010, 13:44

could well be i wouldnt know. how do i check that out?? just had plates and springs changed a few months ago. ta

**Coldrider** · 16th April 2010, 13:45

when coming to a stop from 2okph, pull the clutch in and coast, listen for the noise.

**Ragingrob** · 16th April 2010, 13:45

My clutch sometimes gives a grinding kinda rumble noise when pulling away from 0kph if I don't ride the clutch at all... Sounds like it could be a similar thing... Gonna keep an eye on this thread

**el_scor_cho** · 16th April 2010, 13:53

sorry should have mentioned that its only noticable when clutch is pulled in. usually stops if i throw her into neutral but has been making noise regardless lately.
springs? plates?

**Coldrider** · 16th April 2010, 14:00

Hondas have extremely quiet engines which make small noises sound bad.
Someone else may be able to help.

**el_scor_cho** · 16th April 2010, 14:03

its not too quiet at all, thats what worries me. thanks for the help coldrider

**Spanner Man** · 19th April 2010, 20:49

Hi,

Could be cam chain. Try revving the bike in neutral on stand. If the rattle goes quieter as the engine revs increase and then gets louder as the decrease then its prob cam chain as the chain whips from driving in one direction ot the other. Quite common on mid to late 90's cbr's at about 50,000 kms onwards.

**steve_t** · 19th April 2010, 20:52

Originally Posted by Spanner Man

Hi,

Could be cam chain. Try revving the bike in neutral on stand. If the rattle goes quieter as the engine revs increase and then gets louder as the decrease then its prob cam chain as the chain whips from driving in one direction ot the other. Quite common on mid to late 90's cbr's at about 50,000 kms onwards.

+1 for cam chain/ cam chain tensioner as good place to start looking

**el_scor_cho** · 20th April 2010, 08:53

hmm could be an idea, will have a look. i have never heard it make this noise when shes not moving however

**Coldrider** · 20th April 2010, 09:50

front disc pads rubbing on the disk?

**el_scor_cho** · 20th April 2010, 10:18

naw def not that. think your clutch rumble idea may be along the right lines, only occurs when below 2k revs and sounds in time with the engine. ta for the ideas

**p.dath** · 20th April 2010, 13:41

When I was trying to locate a noise on my bike once I search on You Tube for videos. For example, try searching for "motorcycle cbr cam chain noise", or something similar.

You can often find videos that people have recorded of what something sounds like when it is broken.