1987 Other Isuzu Models Holden Gemini 1987 Breakdown

Engine Mechanical problem
1987 Other Isuzu Models 4 cyl All Wheel Drive 300, 00 miles

Hi.I was travelling along highway when suddenly my car engine just stopped. We have since put new fuel filter, spark plugs, distributor cap & leads, air filter however it does not start. Appreciate if you could assist with problem asap please. It turns over no problem. We suspect its a carby problem as previously advise that one day it will need repair. There is no fuel in the window on the carby. Could this be the problem that it turns over but does not start? Please advise if there could be any other reason? Many thanks