Question about 2004 Honda CBR 1000 RR Fireblade

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Surge at 100kmh's on the highway, i put the bike into 4th gear and opened the throttle. the bike pulled normally until about/around 6000rpm, at this point it started surging not wanted to rev higher... getting off the highway i then went into second, same again pulled until it starts to get into high rpm 6000+ and surging clicked into 3rd pulled for a bit and surged... I thought it was fuel octane since all the servo's had only 95ron but i added octane booster and still same fault occured. Im thinking towards a fuel pump.. And was wondering your thoughts on the matter.. Thanks Gary

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  • gary555 Jan 01, 2009

    Personally i would beleive if it was a air leak i doubt it would idle correctly...

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  • 6,966 Answers

Hi and welcome to FixYa,

Initially, I would suspect an air leak. Possibilities then are:

  • rubber lock/clamp, coupling from air box to each carb not seated properly, loose, misaligned or not connected;
  • torn, defective, misaligned air filter;
  • half of the air box is loose, not seated properly.
Good luck and Thank you for using FixYa. Happy New Year.

Pls be informed that due to my current rank and rating, even a Helpful would be detrimental to my status. Should this solution not address your concern, it would be appreciated if you could just not rate this at all. Cheers.

Posted on Jan 01, 2009

  • Louie  Role
    Louie Role Jan 01, 2009

    I beg to differ, if it were a vacuum leak, then it would not idle correctly.

  • Louie  Role
    Louie Role Jan 01, 2009

    Incidentally, there is a way to confirm. Magnify my suspected air leak. Deliberately create one by removing the air filter. The surging @ 6K RPM would go down to 3K or lower.

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