??? New Unknown Sounds ???

[Frank Adams]

I think your chain is loose and rubbing the swingarm protector(blk rubber on top of swingarm, right below the chain)(chain guide).

Check it and see if theres any signs of wear marks?

 

[OB_Johnnycheese]

I agree check your chain adjustment.

 

[OB_Mis4tun81]

I appreciate any input you guys might have,

After changing the oil and cleaning the chain last night at 400 miles, I took my bike to work this morning and noticed a sound that is kind of like a hiss, which I have never heard before. It sounds like tearing paper slowly and smoothly or something rubbing on a tire (which it isn’t), which does not change with engine RPM or speed, it remains absolutely constant in every gear. But only when on the throttle with the clutch engaged. At a constant speed the hiss can be made to go away instantly by pulling in the clutch, or rolling off the throttle and flickers on and off instantly with either control.

I would think it is not an engine or driveline noise as it is constant, and would either think it is just a sound the bikes make or perhaps a vacuum leak or fuel injection noise (it doesn’t sound like the pump which kicks in when you first turn on the key.

Maybe I am an over scrutinizing Hayabusa owner but I would prefer not to let a possible problem remain unidentified.

The oil was replaced with Suzuki performance 10w 40 and was filled to the correct level 3.5 quarts with a new filter as per the owners manual.

Thanks a lot for your help

 

[OB_Hayaboosa]

I think 3.5 quarts is a little bit shy of being full. If I remember right mine took about 5.5 quarts with filter change.

 

[OB_Big Ed]

The chain is the most likely explanation. It might be too tight. It is very easy to over tighten the chain. This is usually accompanied by a small vibration.

[This message has been edited by Big Ed (edited 25 March 2000).]

 

[OB_valklex]

4 quarts of oil after overnight drain (5.5 quarts is for a big-block suburban). Chains come ultra loose from factory, and clutches always make noise when engaged; no problem). Also hayabusas have an annoying engine vibration at about 4500 to 5000 rpms (I hate that one). I'm hoping synthetic oil quiets it down.

 

[OB_scotty]

Are you sure you just didn't have to much roughage before your ride. Any unusual smells?

 

[OB_Mis4tun81]

Thanks for all your help, Final verdict:

Loose chain, It was borderline when I cleaned it and it was rubbing on the guard.

As far as oil, according to the owners manual capacity with filter change is 3.5 qts. however I noticed that this puts the oil in the lower third of the inspection window. So I can understand most of us wanting to squeeze an extra 1/2 qt. in.

Again thanks