Reply To: Carburetor GV 125 Year 2012
80 kmh
That is like the imfamous “can’t get past 60 mph” issue here in UK too.
I would check the following or replace;
- Ignition coil , sometimes sparks will come out of the wires (coil arcing) , or HT cap is faulty
These 2 parts are common failing OEM parts. - Spark Plugs are breaking down. (Dying)
- The Carb Slides are sticky (dirt again)
- Regulator faulty under heavy load (common), oem regulators are not great.
- Main Jets may be clogged again
(sometimes we clean carbs 2x before we are fully satisfied, so be ready to clean carb 2-3x time before engine is happy with result) - check intake pipes are not leaking air (spray carb cleaner near them)
- spray air boxes top of carb and air filter box (2 boxes, for any leaks near the joints)