Hi,
Opel Astra K 2019 1.4L LFE CNG BiFuel, have interesting problem: when engine is cold, its start on gasoline perfect, but works only 3-4 minute if its stayed on gasoline, but computer after 20-30 sec switch to CNG and its work perfect. But if you want to swich bac to gasoline, engine will shut down and need some time to start again. There is no errors in DTCs. In Opel official service they suspected on EVAP, changed but nothing, and they dont know what is the problem
Is anyone have similar problem, and what to look like? I suspect on fuel presure, or on ECU software, because, one more Astra have the same issue 
Opel Astra K 2019 1.4L LFE CNG BiFuel, have interesting problem: when engine is cold, its start on gasoline perfect, but works only 3-4 minute if its stayed on gasoline, but computer after 20-30 sec switch to CNG and its work perfect. But if you want to swich bac to gasoline, engine will shut down and need some time to start again. There is no errors in DTCs. In Opel official service they suspected on EVAP, changed but nothing, and they dont know what is the problem
Is anyone have similar problem, and what to look like? I suspect on fuel presure, or on ECU software, because, one more Astra have the same issue