If the timing belt was reset the marks are dead on whats causing your 99 ford escort to turn over but not fire?

you set the base time , now you need to set the static timing.(ignition time) perhaps in the process you disconected a spark plug wire and re attached it in the wrong spot. or when you set the base timing you put the #1 piston on a exhaust stroke rather than the compression stroke. if it was put in exhaust stroke the car is never going to fire up. there could also be other reasons. bad plugs,bad ignition module,bad coil. loose plug wires,bad distributor cap.ect.