Greetings Everyone.
I have Mehran 2009 Saloon (bought in Sept-17), Previously (before 6 months) my car was giving 14km/l on petrol. Since 2009 it was only running on petrol. From last 2 months it is giving only 10km/l mileage. Car tunning was done before 6 months. Engine oil was changed in january 2018 and since then it has been travelled for 4700km (my mistake). I am going to change engine oil tomorrow. I have got CNG kit installation last week.. For first time cylinder was filled with 5.6KG gas and in that it only covered 78 km.
Can anybody please suggest that in such condition which thing could be faulty and what service/,maintenance is reauired?
