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Discussion in 'TuneECU Source' started by dave64, Sep 28, 2016.

  1. dave64

    dave64Mr

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    First try with phone and connecting. Screenshot_2016-09-28-18-28-58.png Can any experts tell me why cylinder 2 is different. ? .
     
  2. Pedro

    PedroSupercharged

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    They should all be the same.No2 being the reference. And setting 1 and 3 so the numbers are all the same .
     
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  3. HansO

    HansONot Taking Life Too Seriously

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    If that reading is correct and I have no doubt it is, is your bike a bit rough at idle and low throttle because that is saying your throttle bodies/ plates are out of sync
     
  4. HansO

    HansONot Taking Life Too Seriously

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    Oh and what @Pedro is saying is 100% correct you need to adjust you balance by adjusting the two balance screws, 1 between 1 and 2 to bring 1 in line with 2 and adjust the screw between 2 and 3 to bring 3 in line with 2, I would also be doing a check to make sure all the throttle bodies are sitting in their rubber boots properly because that is a long way out, have you had any back firing
     
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  5. dave64

    dave64Mr

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    Yes backfires on rare a occasion but not often . I wouldn't say it runs rough at all . Guess i will need to get that tune and dyno done soon .
     
  6. HansO

    HansONot Taking Life Too Seriously

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    I would definitely be checking that balance out thou that is the biggest difference I have seen, try hooking it up again and see if it gives the same sort of reading and maybe just play the throttle up and down a couple of times as maybe it was just hanging up on one of the linkages
     
  7. dave64

    dave64Mr

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    Ok I'll have a look at it again and might check the rubber boots at throttle body, thanks Hans
     
  8. warp9.9

    warp9.9Pocałuj mnie w dupę

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    I have never seen one that far out I would also check the vacuum line and plug caps especially to number 2 cylynder.
     
  9. EasTexRIII

    EasTexRIIIUneasy Rider

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    Yea, when mine were far off like that once a vacuum line was unplugged. and if it is you CAN NOT Balance the throttle bodies!:mad:
     
  10. DEcosse

    DEcosseNitrous

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    If there was a leak through any of the ports, the pressure would be HIGHER not lower. (lower number means 'better' vacuum) i.e. #2 is pulling LESS air than 1 or 3.
    The numbers don't so much suggest leaks, just very poor balance (or lack of)
     
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