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    • #5247
      Norbert
      Member
      • Topics: 1
      • Replies: 1
      Joined:
      Dec 27, 2020
      @midnite21
      West Sussex
      GV125

      Hi everyone , I’m in a need of help with my 2007 Aquila and its performance.

      It doesn’t want to go over 45/50mph on a straight road… which on dual carriageway is just disappointing.
      It had been recently serviced as well as had couple things replaced , like a new manifold rubbers and nothing has changed…

    • #5249
      ♠️ MARCEL
      Administrator
      • Topics: 38
      • Replies: 456
      Joined:
      Dec 27, 2020
      @mf448kxn6
      North UK
      GTR

      Welcome to the site and happy holidays

      It would be useful if we know these (makes troubleshooting whole lot easier) , if we skip these , i won’t know how to answer accurately. History helps.

      • Total miles on dash?
      • Has it had valve clearances done? (can’t be avoided)
      • Has it had its carbs taken apart and blasted clean (via air compressor, fluids and even ultrasonic clean?)
      • what modifications does it have?

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

    • #5250
      Norbert
      Member
      • Topics: 1
      • Replies: 1
      Joined:
      Dec 27, 2020
      @midnite21
      West Sussex
      GV125

      No idea on current mileage of the bike…

      9.3k miles on the clock as of now, yet it had 13k back in 2010 according to MOT history.
      someone has been messing with the clock.

      cabrs are in poor condition, pilot screws seized which needs replacement but can’t get a hold of any.

    • #5264
      ♠️ MARCEL
      Administrator
      • Topics: 38
      • Replies: 456
      Joined:
      Dec 27, 2020
      @mf448kxn6
      North UK
      GTR
      • Has it had valve clearances done? (can’t be avoided)
      • what modifications does it have?

      How about the other 2 points above ?

       

      In regards to the carb, I don’t know if you can but can you take out spark plugs and  upload on this site ? (Add media button on the reply box)
      We can see if its running rich and which cylinder front vs rear.

      I rarely encourage messing with the air mix screws for many reasons unless a pro is good with the carb especially multi cylinder carbs , one engine can run a little richer than the other etc to aid in cooling as is the case with hyosungs and maintain some harmony

      So, do you think its possible to disassemble the carb and then give it a clean (air compressor as OEM books say, and some liquid cleaner or some guy to do an ultrasonic clean job, probs £40 for the job if the carb isn’t so bad.

      Least with an open carb its not just about cleaning clogged holes, how about slides being too scratched? torn? slide springs too tired? slide needle has been wrongly set in the LEAN setting ?  (hence why I’d like to see your plugs)

      Be ready to change plugs either case. to new ones.

      Coils , Caps, Regulators are 3 common things that wane on hyosungs but lets do fueling out of the way , as it’s hard to attack many things at the same time.   Dealing with each part / section of the bike will narrow issues down 1 by 1 . Any form of boggings , poor running is always either “valves too tight/too loose” , “fueling from the tank the carb inc pump”  vs  “sparking power” (plugs, coils, caps these 3 are married) – Regulator can just as easily slow things down a bit,  again , electrics after the fueling is out of the way.

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

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