SOHC.co.uk Forums > CB500/550

CB500/4 carburetors

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jj205mi:
well after having a think about it, i decided to do a compression test...



so between 85 and 110psi dry, a wet test seen them jump to 155 and 160psi, so thats a little worse, i guess its a rebuild on the top end.

Can anyone move this to the technical section?

Bryanj:
Before you strip that down get it MOT'd and run it for a while as it could just be sticky rings that may well free off

Trigger:
Bryan is right, get it nice and hot, give it a good trash as it will loosen the carbon from the rings.

jj205mi:
it won't run well enough to take it anywhere lads, I've had it running a fair bit revving it out etc but still no joy. it can't hold an idle etc

Trigger:
Not ticking over will be the carbs or points on these old girls most of the time.

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