Same issue in my car too Suzuki Alto 2007 and 1000CC it was working fine on CNG mene bus petrol pr bhi convert krwadi thi fuel pump change krwa kr bus 2din mai hi smoke ana start hogya hai ?? is se pehle CNG pr bilkul perfect chalti thi
some expert says long time CNG pr chalne k bad petrol pr krne se Ring mai GAP agya hai there is 9K for fixing this issue, but i am afraid k yeh tu phr dobara hojayega agr mene CNG k bad kisi din petrol pr phr chalai tu.
Little confuse guide me what should id do