where you reached?
I am facing the same issue, My mechanic changed the fuel pump and petrol gas conversion switch, on his demand i baught Nabco fuel pump, but after week it stoped working, yesterday again got it fixed by another ellectrition, he said the problem was with switch, and he changed the switch, but after a day it again stoped working on highway. went to suzuki workshop, they said it will cost you 145k plus 1 week time atleast. dont sure if the issue is with fuel pump or wiring.