SOHC.co.uk Forums > CB500/550

Clattering sound.

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Tiny Tim:
Having neglected the 550 for a while and experiencing a points issue, I fitted a electronic ignition.
That seemed to have improved the bikes performance overall.

But, there is always a but. When I started the bike to take it out for a run today there is a rather nasty clattering/knocking sound coming from the back of the engine between the clutch and gearbox.

The clattering is not as noticeable when I increase the revs, it is still there none the less.

The electronic ignition has been checked an double checked.

When I pull the clutch in it's still there, when the bike has run for 5mins it's still there.

I'm at a loss really and would appreciate any advice.

Cheers
Tim

Bryanj:
How about with clutch in, in gear and revs at about 2,00

Tiny Tim:
Not a great deal of difference.

Bryanj:
Difficult to diagnose without listeneing but if it wasn't there before thr bike was layed up the only thing i can think of is possibly rust in a bearing

Tiny Tim:
I'll try a record a video of the bike running later today.
Thanks for the help.

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