3.Difficulty with the fuel system of the engine:
a) Fault in : Preheater, Filter, and Fuel pipes remain cold as a state which applies particularly to operation on heavy fuel oil.
Possible causes are :
1.No steam pressure.
2.Steam pipes obstructed.
3.Failure of the steam pressure-reducing valve.
4.Condensate accumulating in the heating pipes.
5.Water accumulation in the steam trap.
6.Inadequate venting of the heating pipes.
b) Fault in : Fuels do not Circulate and Unheated portions remain cold: A state which applies particularly to operation on heavy fuel oil.
Possible causes are:
1.Fuel circulating pump is defective, or out of service.
2.Fuel tank is empty.
3.Fuel cannot be pumped because of inadequate heating.
4.Shut-off valves or change-over cocks, before or after the fuel circulating pump, are either closed or else set wrong way.
5.Fuel pumps inadequate vented.
6.Fuel pipes clogged by congealed fuel. When the fuel delivery pipes are obstructed, the engine should be barred over with the turning gear for several revolutions, with maximum fuel charge and the priming plug open.
7.Individual fuel pipes inadequately heated or not heated.