yea seems like the case mfarhanhassan , i swear these local mechanics are just rip off why cant the damn guy couldnt tell me that there was a problem in auto choke aswell so i can fixed that aswell , though on the same note i am confused i just had a oil change , caltex20w50 , the previous oil was total quartz 20w50 and car was fine before , since i change caltex car starts to do that on petrol , cng remains fine .