Re jetting – Aquila GV 125 2004
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Bike Model = : Aquila GV 125 2004
Hi everyone,
Looking for a bit of advice on carb jetting.
I’ve got a Hyosung and my current main jets are 82.5. I’m not sure what size the pilot jets are at the moment.
I’ve recently done the sprocket conversion, which has made a big improvement overall, but I’m finding that in 5th gear it struggles to get past around 8,000 rpm.
The main jets and pilot jets have both been cleaned recently, so I don’t think it’s a blocked jet issue.
Has anyone with a similar setup had this problem before? What main jet and pilot jet sizes are people running after doing the sprocket conversion?
Any advice would be appreciated, especially from anyone who has already dialled theirs in properly.
also where to buy parts or if you can re jet without having to take carb out again, cause that was a nightmare
Cheers.
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Carefully and very very very patiently (so you don’t stress the intake pipes), you can get away with unscrewing the carb floats while still on the bike, but you need to drain its fuel first on the float drain screws.
Take a look at the pilots.
Try also 87.5 x2 mains which should be cheap on ebay ?
Mixtures = Don’t touch them ever if the bike is idling fine and changing gears smoothly (like no big “chug chug chugs forward and shoots off like a train” = carb issues or clogged carb again”)
If you have a mini air compressor machine with a small tip hose, you could blow the carbs clean under the floats to force stubbon internal dirt that’s inside the silver body of the carb.
Also on your chain kit, check the reviews as they mention what other riders setups were like and the kinds of speeds they got, to see if yours is on par.
5th gear is rarely used unless on a long A-road that’s 70 plus and your next junction is miles away , its more a stretch gear, most GV riders i know run around the city and never go beyond 40 miles out of their home address , so gear 1 to gear 3 was important to them.
Gear 4 and gear 5 , definitely keeps her calmer than screaming so much if on a long road trip on those long B roads or A roads.
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Good evening
So I rejected mains to 90 front and 92.5 rear as per other gv 125 carby model owners suggestions, my issue now is it’s running worse it’s bogging down when I go full throttle what should I check now? Do i need to do anything with the fuel mixture, should i check the airbox ? Spark plugs have just been replaced! If not I’m thinking is it my float height ?
anyone got a logical checklist for me/ tests I can run to troubleshoot
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