Hi, I bought new pulsar 150 2 months back. some times it is giving me mileage about 40km/l and some times I don´t know where petrol is going? for 1.5 liter petrol I can´t drive even 30 kms? I checked with service center mechanic also, one of the mechanic said there is no problem in bike after driving half km and he reset the petrol point. but still I am getting the same problem (even increased). If i pour 3 or 4 liters, it is giving me 40km/l and if i pour 1.5 lt it is giving me 30 km/1.5 liter... can u give me any suggestions?