[jw130270]

Hey everyone,

On my 1987 CBR600 F1, when I have the clutch engaged, there is a constant 'slight' clunk clunk clunk clunk noise. It's very faint, but still noticable. It originates from somewhere under the seat(vague I know). When the rpms stay high, 8k+, the clunk seems to stop, but I'm not sure if the clunk just got really high pitched and fast to the point of being unnoticable.

However, when I am rolling and I pull the clutch out, the clunk stops.

The bike has never popped out of gear, and every gear runs perfectly normal...or so it seems.

When I slip the clutch into first from a standing start, there are no issues.


Anyone got any idea what this might be?
-Thanks!

 

[Veefer97]

Many bikes make clutch noise with the bike in neutral. Get a stetoscope and isolate the noise to make sure it is the clutch and probably normal for that bike

 

[motoxer311]

Don't have a stethoscope, use a long screwdriver and place it against different areas of the engine/clutch...

 

[jw130270]

Don't have a stethoscope, use a long screwdriver and place it against different areas of the engine/clutch...

when I do this, what am i looking for?

 

[F4sSprintST]

chain tension good?

 

[motoxer311]

when I do this, what am i looking for?

When the bike is running and in gear on nice sturdy rear and possibly a front stand if you have one... Try to recreate the noise while on the stands and locate the source of the noise..