whistle sound when running.

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whistle sound when running.

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CBR Forum >> Past CBR Models >> CBR 600F2 >> whistle sound when running.

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whistle sound when running. - 11/10/2007 4:28:55 PM

CBR13F2

Posts: 241
Joined: 9/20/2007
Status: offline

When i started the bike yesterday and today i have been getting a whistle type sound from the front of the motor. It sounds almost like a squeaking sound. I know its almost impossible to figure out from that what it is but thats really the only way to describe it. Its like a sqeaky hampster wheel and happens when i rev as well. also i get a slight stumble that makes a sound almost like piston slap at 1300 rpms but only when i flick the throttle really quickly. Are these two possibly related? i know this is gonna be hard but if it sounds like something you guys may know of please let me know
thanks

Post #: 1

RE: whistle sound when running. - 11/10/2007 4:33:12 PM

rsp919

Posts: 659
Joined: 8/6/2006
Status: offline

Exhaust leak maybe?

_____________________________

94 f2 frame
nws one-off singlesided swingarm
06 gsxr 750 front forks
98 cbr900rr motor
one-off red carbon bodywork
one-off r6 style upper to mount to oem lowers
996 tail on one-off aluminium subframe and led tail

(in reply to CBR13F2)

Post #: 2

RE: whistle sound when running. - 11/10/2007 4:36:05 PM

rsp919

Posts: 659
Joined: 8/6/2006
Status: offline

A relativly low tech way to check for a leak is to start the bike and go around each exhaust tube at the engine with a lite cigarette. Sounds silly, but it works. If you have a leak it will blow the smoke.

_____________________________

94 f2 frame
nws one-off singlesided swingarm
06 gsxr 750 front forks
98 cbr900rr motor
one-off red carbon bodywork
one-off r6 style upper to mount to oem lowers
996 tail on one-off aluminium subframe and led tail

(in reply to rsp919)

Post #: 3

RE: whistle sound when running. - 11/11/2007 5:24:33 PM

lococbrf2

Posts: 48
Joined: 10/2/2007
Status: offline

the sound you are hearing if it is what i am thinking from what you decribed is the carbs mine makes the same sound when i crack the throttle and i took it to the local shop and they told me thats what it was the carbs are venturi style carbs how they work i dunno but the make a sound similar to what your talking about when you crack the throttle really quik like

(in reply to rsp919)

Post #: 4

RE: whistle sound when running. - 11/11/2007 9:00:08 PM

CBR13F2

Posts: 241
Joined: 9/20/2007
Status: offline

Thanks guys, i know i have a tiny exhaust leak coming from the head not too bad though that could be it as well as the carbs. I thought it may have been the water pump but it onl started happening in the cold. who knows when i figure it out i will definately let you know. Any other ideas also welcomed.
Thanks again!

(in reply to lococbrf2)

Post #: 5