i went out for a ride 2day,when start engine everythings seems fine but when i full throttle the rpm went up to 7000+ then suddenly goes down to 4000+ n wont go any higher..then i stop off the engine n start again the same thing happen but if i throttle half the rpm go to 5000 to 6000,but when full throttle again rpm stay at 4000+...the power is like come n go..
wat could have cause tis?is it the powershot tat cause tis?plz advice..