4. Failure and Troubleshooting
4-6
4.2.2
Engine body
In case engine trouble occurs, refer below table and do appropriate check and maintainance.
Phenomenon Cause
Treatment
method
In case hard to start
engine
(1)Fuel would not flow
(1)Check fuel tank and remove
impurities and water
(2)Check fuel filter and replace it if
it is dirty
(2)Air and water are mixed in fuel oil
piping
(1)Check pipe and tightening band
and replace it with new one or
repair it if it is damaged
(2)Remove air
(3)Remove water or change fuel
(4)Check if the nozzle works
properly or not. If not, replace it
with new one
(3)Oil viscosity is high at cold time.
Engine rotation speed is low.
(1)Use oil properly according to
temperature
(4)Battery tends to go flat. Engine
rotation speed is low. Engine would
not work to start compression.
(1)Charge battery
In case output
shortage
(1)Fuel shortage
(1)Replenish fuel
(2)Check fuel system (Especially
beware of air mixing)
(2)Air filter clogging
(1)Clean element
In case engine stops
suddenly
(1)Run out of fuel
(1)Replenish fuel
(2)Check fuel system (Especially
beware of air mixing)
(2)Shortage of lubricating oil or poor
lubrication
(1)Check engine oil quantity by
looking at oil level gauge
(2)Check lubricating oil system
In case exhaust gas
color is bad
(1)Bad fuel is used
(1)Replace fuel with good one
(2)Excessive quantity of engine oil is
used
(2)Change oil quantity as regulated
one
(3)Incomplete combustion
(3)Check fuel system
In case overheat
(1)Cooling water boiling
(1)Check shortage and leakage of
cooling water
(2)Check tightness and looseness of
fan belt
(3)Clean dust in radiator fin tube
(2)Shortage of engine oil
(1)Check oil level. Replenish oil if
necessary
(3)High concentration of LLC
(antifreezing fluid)
(1)Replenish water only. Or replace
it with LLC of designated mixing
ratio
(4)Overload operation
(1)Reduce the load
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