Reply To: Speed bursts while accelerating. – GV125-S (EFi)
Simon makes good points in regards to “process of elimination” , since you have a naked bike its much easier to get to it than a full faired bike in this freezing winter lol
Because you have a GV-S (EFi) model 125cc , go to halfords and buy this:
- WYNNS FORMULA GOLD PETROL CLEANER BOTTLE
Make sure your bike has half a tank (max!) , or 1/4 fuel left.
Then pour all of the formula gold in the tank.
Ride safely on a dry day , slow ride down the streets, then race it up to 60 on the dualcarriage ways, then slow down again,
You want the formula gold to be running through the internal tank pump, internal tank fuel filter, down the lines, then making its way to the injectors.
It will do its best to “soft clean” any debris clogging the fuel system.
I use it all the time and works wonders. Do NOT use Redex or any other ones you see in Halfords. it must say “Wynns Formula Gold Petrol Cleaner”
Failing that, EuroCarParts should have a store in your city and go to them for it also. It’s a popular item for EFI cars.
(S) in your bike model means it has Injectors than carbs (older GV125’s pre-2018 are named GV125C = C means Classic/Carby)
Use E5 fuel only because even if the bike is designed for E10, the bikes and cars in general run better on E5 . There is nothing positive about the extra ethanol in the E10 pumps. If anything it will make certain bikes run weird.
Also Keep us posted since the caps and plugs were sent to 2 addresses , i had a feeling it was you anyway! –
Remember as good as the Lasers and NGK Caps are, you need good coils 🙂
If your coils are failing, the new plugs will foul up as the NGK caps aren’t getting enough spark energy from the coils. The coils will probably be the last electrical item to worry about.
Test your battery at idle and 5k revs rev-up ===> make sure meter says 14V constant. If less than 13.5V, (in any revs) , replace regulator as per service notice by Koreans
Next conversation , (after above ^ is done first) , is exhaust system , air leak tests , etc … i will explain it all in due time.