46
Problem
Suspected cause
Action
En
g
in
e d
o
es
n
o
t s
ta
rt
Starter motor
does not drive
or speed is low
1. Battery output is weak
2. Battery is deteriorated
3. Battery terminal is OFF or loosen
4. Battery terminal is corroded
5. Power switch or relay is defective
6. Starter motor is defective
7. ECU (Engine Controller) or controller
is defective
1. Check battery fluid or charge
2. Replace Battery
3. Fix/Tighten terminal
4. Clean terminal
5. Contact distributor or dealer for repair
6. Contact distributor or dealer for repair
7. Contact distributor or dealer for repair
Starter motor
drives but
engine does
not start
1. Fuel is insufficient
2. Fuel filter is clogged
3. Water is interfused in fuel line
4. Air is interfused in fuel line
5.Mistake of connecting with external tank
6.Mistake of turning 3way fuel valve
lever
7. Fuel pump defective
8.Solenoid fault
1. Add fuel
2. Clean/Replace fuel filter
3. Drain water in water separator, fuel
filter or fuel tank
4. Extract the air
5.Check fuel piping
6.Check 3way fuel valve
7-1.Check/Replace fuse
7-2.Check/Replace fuel pump
8-1.Check/Replace fuse
8-2. Ask our distributor to repair
<Ambient temperature
falls down below 32
ﾟ
F
(0
℃
) >
1. Fuel is frozen
2. Water in fuel line is frozen
3. Pre-heater is defective
1. Use winterized fuel
2. Drain water in fuel line
3. Contact distributor or dealer for repair
Engine starts but
stalls immediately
1. Fuel filter is clogged
2. Water is interfused in fuel line
3. Air is interfused in fuel line
4.Mistake of connecting with external tank
5. Air filter element is clogged
6. Lubricant oil level is insufficient
7.Emergency operation/Fault detection
1. Clean/Replace fuel filter
2. Drain water in water separator, fuel
filter or fuel tank
3. Extract the air
4.Check fuel piping
5. Check/Replace air filter element
6. Add lubricant oil
7.Ask our distributor to repair
Engine oil pressure
is low
1. Lubricant oil is insufficient
2. Oil filter is clogged
3. Oil Pressure switch is defective
4. Wrong oil is used
1. Add lubricant oil
2. Replace oil filter ask our distributor to
repair
3. Contact our distributor to repair
4. Change to proper kind and viscosity
oil
Overheated
1. Engine thermostat is defective
2. Water temp sensor is defective
3. Water temp meter is defective
4. Fan belt tension is loosen or
insufficient.
5. Coolant level is insufficient
6. Radiator core is clogged
1.Contact our distributor to repair
2. Contact our distributor to repair
3. Contact our distributor to repair
4. Check/Adjust fan belt
5. Check/Add coolant
6. Clean radiator core
Black smoke
comes out from Muffler
1. Air filter element is clogged
2. Fuel injection nozzle is defective
1. Check/Change air filter element
2. Contact distributor or dealer for repair