Hi all, I am new to this community, own a pulsar 150 2009 done 45000 kms. Recently since 1 month as I start the engine it creates a weird sound the one like when the engine cracks if we engage 4th gear at 20-30 kmph (The kit - kit sound). Also the rev Keeps fluctuating automatically, I have to manually set it from carburettor almost every day. I got it checked with the agency as well as local mechanic but both failed, the pick up of the machine has decreased very much too. Please help as to where exactly is the fault.