2008 CBR1000RR Stutters/misses

Discussion in 'Maintenance' started by Leo1974, Jan 12, 2015.

  1. Leo1974

    Leo1974 New Member

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    Hi,

    I'm going to describe this as best I can.

    Started the bike up this morning. It reached normal idling speed (about 1200rpm) no problem.
    I pull off and the bike stutters/hesitates almost like there is a fuel starvation and then it accelerates normally and then stutters and then accelerates normally and then stutters and and...

    On Friday I removed and cleaned the air filter. Afterwards I rode the bike for a short distance and all seemed fine.

    After work today I removed the fuel tank cover etc to see if all the connectors on the air box were plugged in correctly.
    No problem there and all the fuel hoses also look fine.

    Any ideas what could be wrong?
     
  2. Si.

    Si. God Like

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    Plugs?

    Dirty fuel/filter

    gunked up injectors/throttle body needs a clean?
     
  3. Leo1974

    Leo1974 New Member

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    Thanks Si.

    Going to have to check all those things out tomorrow.
    Never had this issue before.
     
  4. racman

    racman Active Member

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    did you lift/remove fuel tank to do any of your maintainance by any chance?
     
  5. Leo1974

    Leo1974 New Member

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    I lifted the tank but did not remove it racman. I rested the tank at an angle by placing a support between the tank and the air box.
     
  6. Dave

    Dave Member

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    Leo,check fuel hoses, breathers under the tank for kinks or that they are not pinched. Can't be much if it was running ok before lifting the tank.
     
  7. Leo1974

    Leo1974 New Member

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    Thank you Dave. I'll check it out.
     
  8. racman

    racman Active Member

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    as dave says leo. thats the reason i asked. i would guess that you have kinked/pinched the fuel breather or actual supply pipe. good luck
     
  9. Leo1974

    Leo1974 New Member

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    Thank you racman.
     
  10. garyauk

    garyauk Active Member

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    Leo, has the bike been lest standing for a while before start up?

    Fuel does go off after a while, but that would normally be a couple of months or so
     
  11. Barstewardsquad

    Barstewardsquad God Like

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    Open the fuel cap if it does it. If it "pops" then it is likely to be the breather.
     
  12. Gilesy

    Gilesy Elite Member

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    do you have a quick shifter on her? could you have trapped any wires while you had the tank up?
     
  13. Leo1974

    Leo1974 New Member

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    @Barstewardsquad. Will check it out today after work.
    @ Gilesy I do not have a quickshifter. Will check for pinched fuel hoses etc today.
     
  14. Leo1974

    Leo1974 New Member

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    The bike never stands for longer than a week.
     
  15. martinowen

    martinowen Moderator
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    I kinked the main fuel pipe, when putting my tank back and on full acceleration it was like ridding a bull !
     
  16. Leo1974

    Leo1974 New Member

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    Mine does the same.

    I have printed the schematics of all the pipe routing/positions.
    I do not remember seeing the fuel tank breather hose in the position that it should be when I had a quick check yesterday when I lifted the tank.
     
  17. martinowen

    martinowen Moderator
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    It was the main fuel line I had done not the breather
     

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