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.

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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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