Forums 🚥 PiT STOP 🔧 Hyosung Technical Help 2013 Delphi engine dies when throttle is released

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    • #6792
      • Topics: 2
      • Replies: 2
      Southeast Asia

      hello I’ve got a 2013 Delphi gv250. it idles and revs great with both cylinders but once you start riding the first cylinder will give out. there is a sweet spot around 35km in 2nd gear were everything rides smooth and both cylinders feel strong, but any loss of throttle at any point immediately kills the engine. You could be anywhere from 5-9k rpm’s but if you let off the throttle the engine stops.
      New ECU changed nothing

    • #6795
      ♠️ MARCEL
      • Topics: 45
      • Replies: 1,892
      North UK

      Good that you changed the ECU, means you have a backup copy as these things are not always easy to get hold off.

      Have you done any ECU Code Retrival from the service manual (it’s in this forum) , these will display a code on the dash to tell us which part is being funny (since being an efi bike has many sensors on it)

      It may seem like nothing but have you also ridden the bike with half a tank full and  2 big bottles of Petrol Cleaner  (such as WYNNS EXTREME GOLD PETROL CLEANER) ,  ride the bike a little bit until the fuel level gets low.   It is extreme to use 2 bottles but we want to see what happens when the fuel system cleaner is running through all fuel parts  if it helps anything at all ?

      Like i said, it may be nothing but taking small steps can *sometimes* help the bike get itself together.  And use  E5 fuel only where possible!

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

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