Doosan A2300 - Fuel Drain Manifold

A Series Diesel Engine Fuel System 81
Carbon build up in the orifices in the nozzle will also
cause low power from the engine.
Remove and check the spray pattern or replace the
injectors.
Fuel Drain Manifold
The fuel system is designed to use fuel to cool and
lubricate the injection pump and injectors.
Fuel is continually vented from the injection pump
and a small amount of fuel leaks by the injector
needle valve during injection. This fuel is returned to
the supply tank by the fuel drain manifold.