Hello friends,
i m having the same problem with my liana LXI CNG, took to suzuki 3S dealer and they are telling that its fuel pump is out of order. i m not convinced to this bc my liana always gets start on petrol as its designed starting mechanism, fuel pump gets ripped off when u dont use ur petrol system for a long period of time but in this case ur fuel pump is always in use whn u start ur engine. if its fuel pump is gone then it should get started on CNG itself directly by the procedure advised in the CNG manual by pressing its button on selector for 5 seconds, i have done it millions of time when i was out of petrol on some occassions.
please help out if you guys have rectified the problem.