Striple Cuts Out

Discussion in 'Technical Help' started by Iain kubrycht, Jul 7, 2017.

  1. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #1 Iain kubrycht, Jul 7, 2017
    So I was riding home from work last night doing about 60mph when my bike started "spluttering" and jerking. I slowed down to abou 20 and it cut out. Stopped the bike and had a look for leaks (none) and checked the chain (fine). Tried to restart and it fired up no problem. As soon as I let the clutch out it stalled. Tried again with higher revs and it lasted a few metres before dying again. Any ideas? Kickstand cut off? Clutch safety switch?
     
  2. Callumity

    Callumity Elite Member

    Feb 25, 2017
    3,358
    800
    Nr Biggar
    #2 Callumity, Jul 7, 2017
    Did you get to the bottom of your previous gremlins? It sounds like an iffy connection in the safety lock out circuit of clutch or sidestand or neutral switch.
     
  3. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #3 Iain kubrycht, Jul 7, 2017
    Yup what I'm thinking. Going to take it apart on Sunday. And give it a deep clean. Hopefully just dirty and not faulty. Had a quick look this morning and it's pretty filthy around the side stand. Was just strange how it started when I was doing 60 if it is the side stand. Thank god it didn't start 10 minutes ago when I was on a stretch of road where there's no place for police to hide! o_O

    My previous gremlin was a burnt wire. That bits all sorted now I think.
     
  4. thebiglad

    thebiglad Old fart, still riding !

    Sep 25, 2013
    5,067
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    Central France
    #4 thebiglad, Jul 7, 2017
    You're sure you had enough fuel in ??
     
  5. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #5 Iain kubrycht, Jul 7, 2017
    Haha! Yes. No light on and sits idling away quite happily in neutral. Only cuts out when I select gear and release the clutch.
     
  6. Havit

    Havit Admin
    Staff Member Subscriber

    Jul 17, 2015
    9,679
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    #6 Havit, Jul 7, 2017
    Long shot......but is the inside of your tank showing any rust?
     
  7. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #7 Iain kubrycht, Jul 7, 2017
    Not that I've noticed and my tank has been off quite recently sorting previous issues.
     
  8. Havit

    Havit Admin
    Staff Member Subscriber

    Jul 17, 2015
    9,679
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    #8 Havit, Jul 7, 2017
    The reason i ask is i had the same issue once, bike ticking over ok but when i put her in gear and let out the clutch to go she would cut out. It worked out that just enough petrol was getting through the pet cock to allow her to tick over but not enough to ride her, The petcock filter was semi choked. Just a thought.
     
    • Like Like x 1
  9. Red Thunder

    Red Thunder Crème de la Crème

    Dec 2, 2014
    2,034
    1,000
    High Wycombe
    #9 Red Thunder, Jul 7, 2017
    Forgive my stupidity by I presume Striple = Street Triple
    And I presume it is ECU fuel injected

    So it runs fine in neutral with clutch out, but in gear as the clutch is let out and the engine takes the load it stalls.
    Does it rev fine in neutral, and in gear while the clutch is in. I presume it does.
    How does it cut out, is it a decline in revs or a quick shut off like a switch has been thrown?
    If it is a decline in revs, maybe a fuel mass sensor or the ECU has thrown a wobbly and not giving the fuel needed

    Just throwing out ideas but still guessing.
     
  10. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #10 Iain kubrycht, Jul 7, 2017
    Ok cheers. One more thing to check.
     
  11. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #11 Iain kubrycht, Jul 7, 2017
    Revs fine in neutral. Starts stuttering when trying to start in gear unless I hold the clutch lever in a certain position. Not all the way in but almost. Won't start at all when in gear and clutch all the way in.

    If I release the clutch quickly with revs up it cuts out like a switch but if I ride the clutch while throttling it stutters then stops.
     
  12. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #12 Iain kubrycht, Jul 7, 2017
    Revs fine in neutral. Starts stuttering when trying to start in gear unless I hold the clutch lever in a certain position. Not all the way in but almost. Won't start at all when in gear and clutch all the way in.

    If I release the clutch quickly with revs up it cuts out like a switch but if I ride the clutch while throttling it stutters then stops.
     
  13. Red Thunder

    Red Thunder Crème de la Crème

    Dec 2, 2014
    2,034
    1,000
    High Wycombe
    #13 Red Thunder, Jul 7, 2017
    Sounds like a side stand or clutch switch connection. If in neutral then the sidestand can be down and clutch can be open or closed.
    When in gear the 2 switches are designed to cut the engine if the sidestand is down. The clutch switch not so much as it is only there to stop the engine starting if it is in gear.

    Just a thought, does your neutral light work properly, is it possible this is faulty and the bike thinks it is in neutral when it is in gear and cuts the engine as you release the clutch as it is getting confused?

    To start with, use a good dose of WD40 on the clutch and sidestand switch and see if that has any effect
     
  14. Thruccyboy

    Thruccyboy Senior Member

    Nov 18, 2015
    458
    113
    Essex
    #14 Thruccyboy, Jul 11, 2017
    Another long shot.....you haven't trapped any pipes etc when you replaced the tank????? theres a lot going on under there pipe wise & a trapped pipe may give you grief. However, i think like others, it`s a switch, my money...side stand.
     
  15. Iain kubrycht

    Iain kubrycht Member

    Aug 5, 2016
    4
    8
    Edinburgh
    #15 Iain kubrycht, Jul 11, 2017
    Problem solved yesterday evening. It was the kickstand safety. Tried cleaning. No joy so it is now bypassed. Surely I won't forget to flick my side stand up! o_O

    Thanks for your help guys.
     
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