If the Fuel Tank Screen or the 2 Fuel Filters are plugged it will cut the Fuel off to the Fuel Injection System.
First place to start.
Locate the little supposed to be clear Plastic Fuel Filter that is under the Hodd and see what you can see through the Plastic. If it is full of Black or dark gray stuff it is very likely that the Filters are plugged.

Along with the above loosen one or more Fuel Injection Lines at the Fuel Injectors and Crank the Engine and see if Fuel Comes of them. Never get any of your Body Parts near the Fuel Injection Lines when they are open during Cranking of the Engine. Stand back and observe.

Check the Oil level and see if there is enough Oil in the Crankcase and the Color of the Oil. If you see any milky colored Oil you have Coolant mixed with the Oil that could be an indication of a Head Gasket failure. Also if you have Oil in the Coolant.

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84 300D, 82 Volvo 244Gl Diesel