ESTEEM Carb 99 VX

Hi Team,

As usual my experts are here so wanted to take some advice from you guys, I got an Esteem 99 VX, its in superb condition, except that I aint get a good mileage it hardly gives me 9kmpl and then there is a smal problem like when in the low gears like 1st or 2nd even third gear it gives jerks as though the fuel is going to end and then gives the pick up a little anoying though, Kindly help, recently changed engine oil new ignition coil.

Thanks