SOHC.co.uk Forums > CB500/550

Trouble with bike

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Sesman:
Thanks John.

beardylondon:
UPDATE:

Found a loose lead on one of the plugs, opps.

Got it started, then sprayed in liberal amounts of Valvoline carb cleaner, as suggested on here, worked a treat.

Now starts on the button from cold, and idles at around 1000rpm....

However, it has now this rattle, which does not go away when you pull the clutch in

https://www.dropbox.com/scl/fi/c0e7arncvp55ek4sse5av/Honda.m4a?rlkey=8f8y8x3wsnan273dzkov0lhdl&e=1&dl=0

Thoughts? Cam chain?

Oddjob:
That really doesn't sound nice. Has the engine been apart?

Very pronounced knocking sound with a metallic element in it.

Try putting the bike in gear, and standing on the rear brake, now slowly let the clutch out until you can feel the engine start to bite on it, does the noise go away at the same time?

Sesman:
Hey, Ken. Do you suspect the primary drive by any chance?

beardylondon:
Thanks, no it’s not been apart in my ownership.

Hmmmm, will try your suggestion.


--- Quote from: Oddjob on March 02, 2025, 06:31:30 PM ---That really doesn't sound nice. Has the engine been apart?

Very pronounced knocking sound with a metallic element in it.

Try putting the bike in gear, and standing on the rear brake, now slowly let the clutch out until you can feel the engine start to bite on it, does the noise go away at the same time?

--- End quote ---

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