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Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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  Topic Review (Newest First)
05-10-2007 3:56 AM
johngc
Re: strange noise

hi no it's not very fast sound a bit like a subuaru imprezza got that kind of missfire sound but dont seem to be a missfire and only does it when riding. ticks over fine runs really smooth and does it as soon as you accelerate even really gently
cheers
05-09-2007 8:40 PM
Fastrr
Re: strange noise

Is it like a 'very fast rattling/clicking sound'? If so it's more than likely the Cam Chain Tension Lifter.

Look at part #4 of the diagram/link:
Ron Ayers Motorsports - Discount Motorcycle Parts


If you don't have a Honda Tech Manual for your bike, i would say buy one. Try eBay, you can pick one up there for under $10 on cd rom. Or buy the hardcopy actuall book for like $70 from Honda. Changing a CCT lifter is easy, most anyone should be able to do it.
05-09-2007 2:20 PM
johngc
Re: strange noise

cant be that then does'nt change with temperature
05-07-2007 10:22 PM
Fastrr
Re: strange noise

The slides on the carbs do rattle until the engine reaches operating temperature. The slides and carbs expand and contract with hot/cold, thus the slide rattle.
05-06-2007 5:00 PM
johngc
Re: strange noise

not sure what kind of tensioner it has only just got the bike and not had it in bits yet as waiting to get a manual first. however i did take the tank of to check filter etc and found the slides in all the carbs move up and down alot cant tell if it could be the noise as only does it when riding
cheers
05-06-2007 4:45 PM
Fastrr
Re: strange noise

a 94 blade shouldn't be having octane issues... they were designed to run on 87 octane i think? Not a high compression engine compared to other sportbikes.

My bike makes all kinds of engine noises, some ok/normal, some not so normal. Do you have a manual cam chain adjuster ( tensioner lifter ) on your bike? Or is it a self adjusting oem type? Many times these bikes had/have issues with oem cam chain adjusters going bad and that will cause some bad noise. I have a manual cct lifter/adjuster on mine and it's adjusted incorrectly at the present time so it causes some rather ugly noise from the top/side of the engine.

Exhaust header leaks at the cylinder head area will also cause noise under engine load.
05-06-2007 7:16 AM
flea954rr
Re: strange noise

when you say the noise comes when under load it makes me think of pinging. what octane fuel are you running? start with the obvious 1st...good luck
05-05-2007 4:26 PM
johngc
strange noise

hi just got a 94 fireblade and when i give any throttle it makes a noise. it's quite hard to describe its quite loud and sounds a bit like a really noisey solenoid at first i thought it might be a slight miss fire and seems to be coming from the top of the engine. it only does it when under load though any ideas?
cheers

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