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#22455
Kernow
👤 Member
  • Topics: 10
  • Replies: 57

I have not been on here for a while, but I had that exact issue on my carby GV125.  So even though it is probably too late to help Twap it might help others.  My airbox to carb funnels were shot, going hard, starting to shrink, and would not seal.  All clamped properly but they let a small amount of air into the system.  Result ok idle and started ok, but on throttle input you got what you saw in the video.  If you could get it to rev past about 3.5k/4k it would rev up and climb but not smooth.  I 3d printed a new set using TPU filament and cured it – been on bike for a few years now and still good.  Hope this helps diagnostics for others.  If you want to find that air leak spray carb cleaner and watch for a rev rise, might be very slight but that is enough to mess up cv carbs.