Am I Hearing my Cam Chain?

This my sound weird but today I noticed a sound coming from the engine which I could swear is the cam chain spinning. Is this possible? Is it a bad thing? I never noticed it before and I am a little worried that it could be loose. I know the bike has an auto tensioner on the chain but I wonder why I can hear It now and not during the first 60 hrs. The bike still runs perfect so I am a little confused. Anyone have a similar experience or any possible insight.

Try checking it. Sure it's not major chain slap? Chain loosened up?

I don't think so, I think it does it on the stand, but I will be sure to check that. It sounds like a faint whistling and whizzing, or what I think a cam chain would sound like spinning, coming from the left side.

They're noisey, and the aluminum frame doesn't help. But do this: see if the noise goes away when you pull in the clutch.

Good idea, i will try that next week. Don't know why I didn't think of that. :thumbsup:

Noticed a whirling noise in my 06 this weekend as well. Pulling the clutch doesn't make it stop, but does change the pitch considerably. I just figured it was normal noises coming from the clutch... at least I'm hoping it is normal???

There is a noise that all YZF's, and many others make that is the sound of the gear box being rattled around by the engine at idle. Gas engines don't really idle at a steady speed unless they have a lot of cylinders and huge flywheels. Those with fewer cylinders will accelerate at each power stroke, and decelerate at each compression stroke. The trans then becomes somewhat like a loose load in a pickup truck in traffic.

Normally, this noise will be reduced or eliminated by pulling the clutch in, depending on how cleanly the clutch releases. Putting the bike in gear should stop it altogether.

Note that the primary gears are straight cut, though, so they will produce some whining, whirring, or howling sounds all the time.

This my sound weird but today I noticed a sound coming from the engine which I could swear is the cam chain spinning. Is this possible? Is it a bad thing? I never noticed it before and I am a little worried that it could be loose. I know the bike has an auto tensioner on the chain but I wonder why I can hear It now and not during the first 60 hrs. The bike still runs perfect so I am a little confused. Anyone have a similar experience or any possible insight.

If you've got a lot of time on the motor, then the cam chain could be stretched beyond the tensioner's adjustment. Or possibly the tensioner is not doing its job correctly . . . . these scenarios are not likely though, given your bike is an '06 (unless you've ridden the wheels off it since new!)

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