Troubleshooting - Doosan 7/71 Operation And Maintenance Manual

This item contains a simple troubleshooting. When a failure takes place on your Doosan engine, diagnose the cause referring this troubleshooting.
Should the cause of failure not be detected or you are unable to manage the failure, consult your machine supply source or nearest Doosan engine
service outlet.
Engine does not start
Starter does not turn.
Starter turns but engine does not
fire.
Engine fires but stalls immediately. Air in the fuel system.
ENGINE TROUBLESHOOTING
Battery discharged
Bad cable connections.
Starter or starter switch failure.
Safety relay failure.
No fuel injection.
Fuel is injected but engine does not
fire.
Incorrect low idle speed adjustment.
63
Engine stop solenoid malfunction.
No fuel in the fuel tank.
Clogged fuel filter element.
Air in the fuel system.
Control rack is stuck at no fuel
position.
Incorrect preheating operation.
Glow plug malfunction.
Incorrect injection timing.
Low cylinder compression
pressure.
Engine stop solenoid not fully
returned.
7/71, 12/56