Anybody solved the 5k engine rattle yet? - Page 3 - Honda CBR250R Forum : Honda CBR 250 Forums
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post #21 of 143 Old 05-01-2012, 04:12 PM
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My 5k rattle goes away at 8k, so I just keep it revved up, baby!

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CBR 250r Black/Black (wife's)


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post #22 of 143 Old 05-02-2012, 02:31 AM Thread Starter
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Quote:
Originally Posted by Empty Sea View Post
My 5k rattle goes away at 8k, so I just keep it revved up, baby!
The same with me..if i keep the rpm at 5k then the rattle is very loud but if i rev it stright up to 7k or 8k i dont hear any thing
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post #23 of 143 Old 05-02-2012, 04:43 AM
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Even I have this peculiar sound coming from 5k rpm onwards. It sounds like two thin sheets of metal plates rattling into each other...more like a clattering sound. It starts at 5000 rpm and goes away after 6500 rpm. Surprisingly it doesn't sound if I rev the bike stationary at similar rpms...its only while riding. The problem is while touring, I generally cruise at 100 kph and that happens at these rpms...so its kinda irritating to hear that clatter. Not sure where the problem is.

"Whatever it is, it's better in the wind"

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post #24 of 143 Old 05-02-2012, 06:56 AM
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Originally Posted by pulsurge View Post
Even I have this peculiar sound coming from 5k rpm onwards. It sounds like two thin sheets of metal plates rattling into each other...more like a clattering sound. It starts at 5000 rpm and goes away after 6500 rpm. Surprisingly it doesn't sound if I rev the bike stationary at similar rpms...its only while riding. The problem is while touring, I generally cruise at 100 kph and that happens at these rpms...so its kinda irritating to hear that clatter. Not sure where the problem is.
I've covered how to get rid of it numerous times.

Probably even in this thread.
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post #25 of 143 Old 05-02-2012, 07:24 AM
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I thought I did, but honestly I doesnt bother me. But What I was going to look into was if out bike has a pcv valve. I noticed it's actually at a certain throttlw perfentage and i can make it disapear and reappear by changing the throttle 10%. It sounds to me like when you chake a PCV valve and the little ball rattles in the housing

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post #26 of 143 Old 05-02-2012, 09:44 AM
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the only thing that i hear rattle is my keys.
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post #27 of 143 Old 05-02-2012, 10:09 AM
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Do we need 1000 of these silly threads?

Its a Honda
they dont break.

EVER.
Even I cant break em.



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post #28 of 143 Old 05-02-2012, 10:26 AM
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Do we need 1000 of these silly threads?

Its a Honda
they dont break.

EVER.
Even I cant break em.
he's tried too.... his engine break in involved throwing his bike off a cliff...

-true story

Better to Sweat than Bleed.
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post #29 of 143 Old 05-02-2012, 11:20 AM
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Don't worry newb, everything sounds like an engine rattle to those who don't understand the science of sound, harmonies and amplification.

God i love the way you talk!
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post #30 of 143 Old 05-02-2012, 12:14 PM
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Makes you wonder what these noobs would say if they bought a non idiot proof learner bike like a whosang, or a megelli etc.

They pick on the worlds most indestructible new motorcycle.. and the fastest selling bike worldwide, somehow wanting to spoil theit post purchase satisfaction and they have no previous bikes to compare to.

they stall it,
they drop it,
they coast it with the clutch in and say thats the way to 'drive' ,
they jam gears,
they crash it,
they do the worst buffoonery methods of operation and maintenance
and so far Ive only heard of one that destructed (and he has not posted on the forum since)
so I'll take these 'my bike is going to break' threads with a pinch of salt and lots of humour.



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