Forums 🚦#HYOCULTURE 😃 Hyosung Chat Bike wont run in high speeds

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    • #3099
      Håvard
      Member
      • Topics: 2
      • Replies: 2
      Joined:
      Jun 10, 2019
      @havard34
      Location:
      Norway
      Riding:
      Gt125r
      Points: 50

      whyen i start the bike and try to drive it for a while on the road, the bike turns off, (not in the electrical way), and i am having problems starting it again. it happens most commenly in high speeds around 80-90 km/h. i have changed the fuelfilter, and sparkplugs. does any one know what the problem can be, and its not the fuel lines, i have checked them and they are fine. its a gt125r 2007-model

      thx for answers

    • #3104
      ♠️ MARCEL
      Administrator
      • Topics: 38
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      Joined:
      Jun 10, 2019
      @mf448kxn6
      Location:
      North UK
      Riding:
      GTR
      Points: 3,127

      Hey,
      What spark plugs do you have?  Can we see them so I can judge if the carb is rich or not.
      Spark plugs will also tell us if your ignition system is good.

      Just click “add media” above the reply box to add a few pictures in to this thread.

      Until we get more info,  your story is commonly:
      – Ignition Coils.
      – HT Caps
      ===lots of cranks ^ might mean weak sparking system.
      ===stock hyosung parts & HEAT = cuts off while riding , until something to do with sparking system cools down.

      If you are sure the fueling is good (eg. carbs cleaned out & good lines) , then look at the “Regulator”.  It must say 14.6 volts at the battery ,   any less? = change it.  13.x volts is not good for these hyosungs.
      ===lots of SLOW cranks ^  might mean the battery is dying down and wasn’t being charged  ==> also send less juice to spark your bike to life.

      Battery size is 12-14ah  ( 14BS) .  The speeds these bikes do when its healthy is usually 130-145km max

      // Meditation doesn't mean you have to sit still....

    • #3133
      Håvard
      Member
      • Topics: 2
      • Replies: 2
      Joined:
      Jun 10, 2019
      @havard34
      Location:
      Norway
      Riding:
      Gt125r
      Points: 50

      hi, the spark plugs i use are:

      NGK R CR8E

      they are brand new, just like these

    • #3137
      ♠️ MARCEL
      Administrator
      • Topics: 38
      • Replies: 246
      Joined:
      Jun 10, 2019
      @mf448kxn6
      Location:
      North UK
      Riding:
      GTR
      Points: 3,127

      It would be easier to look at your spark plugs, take them out youself so we see what your engine is doing ?

      CR8E is the stock plug thats correct.

      // Meditation doesn't mean you have to sit still....

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