AGG AS4300 - Fault mode 10: Unexpected engine halt or misfire in deceleration; Fault mode 11: Poor acceleration; Fault mode 12: Engine will not stop; Fault mode 13: Unsteady idle speed and engine hunting

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Fault mode 10˖Unexpected engine halt or misfire in deceleration
Possible cause Correction
Causes related to the protective system of the
vehicle or equipment
Contact the manufacturer of the vehicle or
equipment
Air in the fuel system
Check for air in the system. Tighten or replace the
fuel joints, fuel pipes if necessary and then prime
the system
The fuel has been contaminated Replace it with clean and qualified fuel
Fault mode 11˖Poor acceleration
Possible cause Correction
Inquire the driver or operator Obtain all the information relevant to the problem
The drive system has been changed and cannot
match the engine
Check the transmission gears for mismatch of the
engine
Overload of accessories Check the cooling fan, air conditioner and the
vehicle braking system for too much resistance and
reduce the load of the accessories
The accelerator pedal movement is restricted Check the pedal for restriction
Leakage of the intake system
Check the intake manifold, intake pipe, intercooler
and its pipelines for leakage
The intake system or exhaust system is blocked
Check the resistances of intake and exhaust
systems.
Injection pump timing is not correct
Check and adjust injection pump timing. Refer to
5.2 for the procedure
Intake/exhaust valve clearance error (s) Check and adjust valve clearance
Fault mode 12˖Engine will not stop
Possible cause Correction
Electric key switch fault Refer to the manual of vehicle or equipment
manufacturer for instruction
The engine inhales fuel mist
Check the intake manifold and separate the source
of fuel mist
External power supply
Check and make sure there is no external power
supply being connected to the power supply circuit
of the vehicle or equipqment
Oil leak in the turbocharger due to poor seal
Check the compressor outlet and intake pipe for oil
trace
Fault mode 13˖Unsteady idle speed and engine hunting
Possible cause Correction
Air in the fuel system
Check for air in the system. Tighten or replace the
fuel joints, fuel pipes if necessary and then prime
the system