[Resolved]  Yamaha Motor India — Engine misfire problem

My r15 v3 2019 model, it was going upto 10k km no issue with my bike after i noticed petrol tank cap filled with water continously its rust also in rainy time. I went to service center and asking about the problem they told its normal only its having water bypass is there so dont worry about this. But i am not satisfied with this after i am noticed too much water filled in that cap so i am panic about petrol and water mixed with tank.
After few days i felt engine cutt off problem when i quick accleration time and step by step its giving more trouble misfiring problem and engine cut off in traffic. So i went to service center and told to check my bike. After they told the water bypass is choked so only its going water inside. After drain the petrol i found 60% water mixed with petrol. They told to check the fuel pump and injecter. Afyer they said injecter is ok pume haiving issue so need to replace the fuel pump its cost of 6800rs + fitting charges. They only seeing its self told pump was gone. It is possible to identify the problem in diagnostic.