Change engine,save yourself the headache,if you are from lahore i can help with the work you can pm me,i only recommend engine rebuilding for suzuki,trust me a sealed engine driven 100k is better then a zero meter rebuilt engine,a good assembly will cost you around 40k(average rate is around 25k) but in 40k you will be getting a very low milage engine that will last you arnd 200k kms easily without any issue provided you give the car the maintainance it recquires,and a rebuilt will easily cost you upto 50k