Question about 1991 Honda CBR 250 RR

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Loss of power around 8 -10,000 revs in 3/4 gear

I own a 1991 Honda CBR250RR with about 30,000kms.. On my last ride the engine revs died in 3rd gear around 8 - 10,000 revs, Power dropped, revs dropped, pulled the bike over and the engine cut out. Took a couple of minutes to start it up. Went ok for about 1km and then did the same thing. When the engine revs dropped the engine noise changed to a hard metallic sound. Bloody confusing.

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  • Anonymous Mar 15, 2014

    Engine cuts out under heavy load and the rev counter drops back to about 1000rpm

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Ello m8,,hows things,,clean out the air filter 1st, change all your plugs mr,try that , if nothing u will need to get the carbs balanced to by a bike shop,mechanic,,unless u have carb gauges,,, itl be easier if they do it,, try these 1st m8,, if no joy come back and il go threw step 2 with yuh,,

Posted on Feb 28, 2009

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4. Vacuum piston malfunction.
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For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Revving but no acceleration
CBR250RR No Acceleration or Power When Giving Throttle Sound is Different
http://mototh.com/files/honda/CBR250R/Honda-CBR250RR-Service-Manual-EN.pdf
https://www.partsfish.com/page/oem-parts-for-honda
http://www.hondampe.com.au/docs/owning_a_honda/owners_manuals/motorcycles/CBR250R-RA%2032KYJE000.pdf

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