125cc coughing and sputtering?

2018 taromoto 125cc 300km on the clock when I start it up it usually trys to die out if I rev it too hard and kinda bogs unless I'm really gentle with the throttle then when it warms up it runs fine but occasionally splutters as I'm riding it.. It's not that old so I wouldn't expect it so don't know if it's a manufacturers fault or just the way those engines work but it's a beautiful bike. Basically It seems like vacuum leak kind of symptoms but I wouldn't know too well unless it has 4 cylinders & I'm going to think about fixing whatevers up with it in the next week or so so does anyone know what it might be???
Answers

Anonymous

If it was a vacuum leak the revs would rise and fall without you touching the throttle. First thing you do is stop trolling the internet. Then you remove the spark plug and read what it is showing you. I will guess that replacing the plug will fix the problem.

Anonymous

Take it to the dealer. Chinese bike? See a mechanic and good luck. The bike is likely running lean meaning it is starving for fuel.

Nightworks

"I'm going to think about fixing whatevers up with it in the next week or so..." Why? Even Chinese bikes have warranties. If it's not running right, then it back to the dealer and get them to sort it out for you.