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R6 Wide Open Throttle issue?

Discussion in 'Tech' started by speedfreak177, Mar 24, 2013.

  1. speedfreak177

    speedfreak177 Well-Known Member

    The bike sat for a while from previous owner who ran U4.4 and left some in bike So I decided to go through the bikes fuel system
    -Cleaned tank
    -Cleaned fuel pump
    -Cleaned minor risidual gum in airbox
    -Cleaned all injectors (on flowbench)
    Put bike back together and it was very hard to get started more so than it should have been.
    The issue is this:
    If i gradually open throttle it seems to go to redline with no problem but if I hold it at lets say half throttle and then wack it wide open the bike kind of stays at or below 10K but if i back off and feather a bit i can get to redline with no problem

    It also does that if i go from idle to WOT, it wont go unless I play with it a bit to get it there

    Anyone ever have any of these symptoms and have a suggestion?

    Thanks,
     
  2. emry

    emry Can you count? 50 Fucking what?

    Year might be nice... Been a few different versions...

    When you describe the "issue" is that sitting on a stand or riding it?
     
  3. jimfowler

    jimfowler Well-Known Member

    year, mileage, modifications, etc. all very pertinent info.
     
  4. speedfreak177

    speedfreak177 Well-Known Member

    On stand, hasnt been even remotely warm enough by me to try it on the road

    year, mileage, modifications, etc. all very pertinent info.

    2009 R6r
    Full race set up
    SS build
    appx 500 miles since build
    Kit ECU, power commander for quick shifter
     
  5. emry

    emry Can you count? 50 Fucking what?

    Its a return-less fuel system, they can take a while to purge if they are completely empty. Wait til the weather is nicer and ride it. Rev tuning an engine on the stand will not produce acceptable results. YCCT does not always behave predictably unless the engine is under a load.
     
  6. speedfreak177

    speedfreak177 Well-Known Member

    so your saying it will clear up by riding?
    how far or miles till it does?
    this is a race bike so i cant really do to much on the street without the po po breaking my balls..
    I need to bring it to get dyno tuned for different race fuels so I want to make sure it is running properly first
     
  7. MELK-MAN

    MELK-MAN The Dude abides...

    this..
    may need to diagnose on the dyno if you can't get to the track.
     
  8. CB186

    CB186 go f@ck yourself

    Leaky diaphragm in one or more of the throttle body sliders?
     
  9. YamRZ350

    YamRZ350 Nicorette Dependent

    I think they went away after 05.
     
    Last edited: Mar 25, 2013
  10. speedfreak177

    speedfreak177 Well-Known Member

    my plan is to race at CMP april 13-14 but before I make the 14 hour trip I want to be certain this clears up....
    Dont think I can get to a track day before then
    guess it will have to go to Mark for more than tuning
     
  11. speedfreak177

    speedfreak177 Well-Known Member

    my plan is to race at CMP april 13-14 but before I make the 14 hour trip I want to be certain this clears up....
    Dont think I can get to a track day before then
    guess it will have to go to Mark for more than tuning
     
  12. CB186

    CB186 go f@ck yourself

    Ah. Well, shows you how old my shit is.
     
  13. YamRZ350

    YamRZ350 Nicorette Dependent

    Be happy, my shit is older than your shit.

    And shit.
     
  14. Steeltoe

    Steeltoe What's my move?

    Truth!
     
  15. jimfowler

    jimfowler Well-Known Member

    no diapragms on that bike/year.

    as much as i love a technical/mechanical explanation for all things, i also subscribe to the "gotta beat on it a little" theory. despite it being completely street illegal you can surely get a few blocks of hoodlum-driving in without getting caught.

    so i suggest a little more than just revving it in the garage and perhaps report back prior to your departure.

    - jim
     
  16. speedfreak177

    speedfreak177 Well-Known Member

    I will try that as soon as the weather breaks
     
  17. emry

    emry Can you count? 50 Fucking what?

    :up:
     
  18. speedfreak177

    speedfreak177 Well-Known Member

    Follow Up !

    OK guys , problem cured!!! Thank you to everyone for your help and a special thanks to "emry" for nailing that shit right on the head!!!
    Took the bike out with only a tank on it,
    (damn hard to sit on that subframe w/no tail)
    Could only do quick blasts up and down the block
    as it started to clear up
    I got ballsy and decided to hit the main rd for a bit more of a stretch...after two rounds of 1/2 mile drags , she started running awesome
    hopefully she stays primed and ready to go....I will try it again in a day or 2 to make sure
    Thanks again fellas!
     
  19. emry

    emry Can you count? 50 Fucking what?

    Glad you got it sorted.
     

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