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CBF600 whistle or squeak
Posted: Sun Dec 15, 2024 11:54 pm
by Trogladyte
I've currently got my mate's wife's 60 reg CBF600 here. it's a long story, but due to health stuff neither she nor he can ride it, and its parked up here. I need to get it an MOT and was out messing with it earlier, and I think we are ready for the MOT.
But it is making a bit of an odd noise. It's like a whistle, but doesn't sound like air escaping. So perhaps more of a whine or a subtle high pitched squeak. It's really hard to localise, but it seems to be in the area of the generator perhaps, on the left of the engine. When it starts it doesn't do it, but then it appears, when the bike is idling. It seems to disappear with a few revs, but then returns on idling.
Any ideas? Is it a "they all do that Sir"? Or what?
Re: CBF600 whistle or squeak
Posted: Mon Dec 16, 2024 9:41 am
by Rockburner
I'm assuming it has oil in it.....
Re: CBF600 whistle or squeak
Posted: Mon Dec 16, 2024 10:03 am
by crust
Hi Trog, how's things?
Could it be channeling the cat?
Re: CBF600 whistle or squeak
Posted: Mon Dec 16, 2024 11:21 am
by Skub
Induction noise? Did it always make the sound? Maybe normal.
Either that or a newly hatched shoggoth in the airbox.
Re: CBF600 whistle or squeak
Posted: Mon Dec 16, 2024 5:06 pm
by mangocrazy
Skub wrote: Mon Dec 16, 2024 11:21 am
Induction noise? Did it always make the sound? Maybe normal.
Either that or a newly hatched shoggoth in the airbox.
Yeah, a whistling noise can just as easily be the sound of air being sucked in to a leaky inlet gasket.
Do shoggoths whistle? I suppose baby ones might.
Re: CBF600 whistle or squeak
Posted: Mon Dec 16, 2024 5:13 pm
by Count Steer
mangocrazy wrote: Mon Dec 16, 2024 5:06 pm
Skub wrote: Mon Dec 16, 2024 11:21 am
Induction noise? Did it always make the sound? Maybe normal.
Either that or a newly hatched shoggoth in the airbox.
Yeah, a whistling noise can just as easily be the sound of air being sucked in to a leaky inlet gasket.
Do shoggoths whistle? I suppose baby ones might.
The adults do sometimes whistle in a 'What? Me? Eating your soul? The thought never crossed my mind' sort of way.
I'm going with a bearing issue personally.
Re: CBF600 whistle or squeak
Posted: Tue Dec 17, 2024 12:25 am
by Trogladyte
Well...yes it's full of oil. It hasn't always done it. I am beginning to suspect a clutch bearing, but who knows?
I have enough trouble with those bloody Shoggoths that are still nesting under my shed. They'd better not be in the garage now. The toads are bad enough
Re: CBF600 whistle or squeak
Posted: Wed Dec 18, 2024 2:43 pm
by A_morti
If it were a car, I'd point you towards the PCV check valve. Maybe?