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Rattling noise
Posted: Tue Nov 25, 2014 3:10 pm
by CBXSA
My 550 F has a rattling noise and knock when idling. It is louder when the engine is still cold, but, becomes quieter as the engine gets warmer. The rattling is very much constant, hot or cold. I do not detect any slack in performance.
Is it the cam-chain? I did read that it is a problem on the CBX's.
Is it advisable not to ride the bike until it is fixed?
I would appreciate all and any advise.
Re: Rattling noise
Posted: Tue Nov 25, 2014 3:15 pm
by Rick Pope
First, welcome. Glad you stopped in here. But, this is a site focussed on the CBX 1000. Most of us are in the USA, and we only got the CBX1000 here, not the other sizes.
That said, try pulling in the clutch lever at an idle and see if the noise lessens, or even goes away. If so, you likely need a tune-up and carb synch.
Re: Rattling noise
Posted: Tue Nov 25, 2014 3:25 pm
by EMS
Without hearing it, it is difficult to even guess. It could be a number of things.
I don't think it is the clutch though. These second generation DOHCs did not really suffer from the clutch ailment that the 79 and 80 CBX and some of the early 80 F bikes did.
Like you said, cam chain, valves, worn cam itself and even main bearings could be the culprit.
I would recommend to have a trusted mechanic with some experience, not necessarily a dealership, listen to it and assess the "damage".
