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Problem
Starter motor
1. Battery output is weak.
does not drive
or speed is low
2. Battery is deteriorated.
3. Battery terminal is OFF or loose.
4. Battery terminal is corroded.
5. Relay is defective.
6. Starter motor is defective.
7. ECU(Engine Controller) or controller is
8. Battery Isolator is OFF.
Starter motor
1. Fuel is insufficient.
drives but
2. Fuel filter is clogged.
engine does
3. Gauze filter is clogged.
not start
4. Water is interfused in fuel line.
5. Air is interfused in fuel line.
6. Poor piping connection to external fuel
7. Fuel tank selector lever (3-way valve)
8. Fuel cut solenoid (motor) does not work.
9. Fuel pump defective.
<Ambient
1. Fuel is frozen.
temperature
2. Water in fuel line is frozen.
falls down
3. Pre-heater is defective.
below zero>
Engine starts but
1. Fuel filter is clogged.
stalls immediately
2. Gauze filter is clogged.
3. Water is interfused in fuel line.
4. Air is interfused in fuel line.
5. Poor piping connection to external fuel tank.
6. Air filter element is clogged.
7. Lubricant oil is insufficient.
8. Emergency operation/Fault detection.
Engine oil pressure is
1. Lubricant oil is insufficient.
low
2. Oil filter is clogged.
3. Oil Pressure switch is defective.
4. Wrong oil is used.
Overheated
1. Engine thermostat is defective.
2. Water temp sensor is defective.
3. Controller is defective.
4. Fan belt tension is weak.
5. Coolant is insufficient.
6. Radiator core is clogged.
Black smoke comes
1. Air filter element is clogged.
out from muffler
2. Fuel injection nozzle is defective.
3. Improper fuel is used.
Suspected cause
defective.
tank.
position is wrong.
1. Check / battery liquid/ or
2. Change battery.
3. Fix / Tighten terminal.
4. Clean terminal.
5. Ask our distributor to repair.
6. Ask our distributor to repair.
7. Ask our distributor to repair.
8. Ask our distributor to repair.
1. Add fuel.
2. Clean/Change fuel filter.
3. Clean/Change gauze filter.
4. Drain water in water
5. Extract the air.
6. Check piping connection.
7. Check lever (3-way valve).
8-1. Check/Change fuse.
8-2. Check/Change fuel cut
9-1. Check/Change fuse.
9-2. Check/Change fuel pump.
1. Use winterized fuel.
2. Drain water in fuel line.
3. Ask our distributor to repair.
1. Clean/Change fuel filter.
2. Clean/Change gauze filter.
3. Drain water in water
4. Extract the air.
5. Check piping connection.
6. Check/Change air filter
7. Supply lubricant oil.
8. Ask our distributor to repair.
1. Supply lubricant oil.
2. Change oil filter.
3. Ask our distributor to repair.
4. Change to proper kind and
1. Ask our distributor to repair.
2. Ask our distributor to repair.
3. Ask our distributor to repair.
4. Check/Adjust fan belt.
5. Check/Supply coolant.
6. Clean radiator core.
1. Check/Change air filter
2. Ask our distributor to repair.
3.Change to clean fuel.
40
Action
Charge.
separator, fuel filter or fuel
tank.
Solenoid.
separator, fuel filter or fuel
tank.
element.
viscosity oil.
element.
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