problem in engine

Hi,

my name is vikash kumar. I leave in bihar, east champaran &  i purched celereo zxi in june 2015 overall car is ok but some problem is in engine when I drive car in market second gear third gear some time engine power suddenly less down  zero & after  minium time sloly sloly up pickup. First servicing is ok & second servicing in november 2015. I purched celereo zxi in june 2015 overall car is ok but some problem is in engine when I drive car in market second gear third gear some time engine power suddenly less down  zero & after  minium time sloly sloly up pickup. first servicing is ok & second servicing in november 2015. I purched celereo zxi in june 2015 overall car is ok but some problem is in engine when I drive car in market second gear third gear some time engine power suddenly less down  zero & after  minium time sloly sloly up pickup. first servicing is ok & second servicing in november 2015.