Hi, when i start my scooter in the morning i leave it for 2 minutes on idle to warm up a little but then when i try to go i give it a little gas and it barely moves and farts from the exhaust and smokes like crazy but after around 200-300m it stops farting and smoking and goes normally BUT also when i go somewhere and i turn off my scooter for around 15 minutes and then when i start it and try to go it goes hardly again its farting for around 50m and then it stops and everything is fine. If you know what's the problem please tell me.