its very simple and easy to change something with new.. and any one who tells you is not a mechanic.
first try fuel system cleaner, you can get it very easily. running the car on CNG for a long time causes missing on petrol.
also have your fuel filter (petrol filter) cleaned by a mechanic, some times it is choked.
your problem will be solved in no time.
Dont you find it Funny that after Monday(M) and Tuesday(T), the rest of the week says WTF?
Yar Thanks for reply. Yesterday i have cleaned the fuel filter by mechanic also fuel pressure is ok so fuel pump is alright.....only doubted thing left are injectors....Electrician is asking 3000 for all four Kabli(Replacment included).....