Nissan cranking not starting

[Chicky]

Hi team. I own a Nissan hard body, with ZD30 engine, I bought the car from facing out project. I replaced the injector pump and after the car was fine for 4year than started the issue of cranking but not starting. I replaced again the injector pump but still the problem passist. Any one aware of the issue

Thanks

[Trevor]

Crankshaft sensor?
Fuel rail pressure sensor