Simple Engine Troubleshooting - Isuzu 3LD2 Instruction Manual

9. SIMPLE ENGINE TROUBLESHOOTING
This item contents a simple troubleshooting. When a failure takes place on your ISUZU engine, diagnose the
cause referring this troubleshooting. Should the cause of failure cannot be detected or you are unable to
manage the failure consult to your machine supply source or nearest ISUZU engine service outlet.
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Battery discharged.
- Starter does not turn.
Imperfect cable connections.
Starter or starter switch failure.
I Safety relay failure.
Engine stop solenoid return failure.
No fuel in the fuel tank.
- No fuel injection.
T
- Clogged fuel filter element.
- Air in the fuel system.
1 Control rack is stuck at no fuel
position.
Unproper preheating operation.
Glow plug malfunction.
Fuel is injected but
--F
Incorrect injection timing.
engine does not ignite.
Low cylinder compression
pressure.
Engine does not start.
Starter turns but engine
does not ignite.
I Engine stop solenoid incomplete
return.
Engine ignite but
stall immediately.
- Air in the fuel system.
Improper low idling speed
adjustment.
75