Troubleshooting; Engine Troubleshooting - Kubota ZD1600 Series Operator's Manual

TROUBLESHOOTING

TROUBLESHOOTING

ENGINE TROUBLESHOOTING

If something is wrong with the engine, refer to the following table for the cause and its corrective measure.
Symptom (if)
The engine is difficult to start or will not start.
Insufficient engine power.
The engine stops suddenly.
Exhaust fumes are colored.
Engine overheats.
120
• No fuel flow.
• Air or water is in the fuel system.
• In winter, oil viscosity increases, and en-
gine revolution is slow.
• The battery becomes weak and the en-
gine does not turn over quick enough.
• Insufficient or dirty fuel.
• Air cleaner clogged.
• The output is limited due to high water
temperature.
• Insufficient fuel.
• Fuel quality is poor.
Black • Too much oil.
• Engine is overloaded.
• The inside of exhaust muffler is damp
from fuel.
• Injection nozzle trouble.
Blue white
• Fuel quality is poor.
• Ambient temperature is low.
• Engine overloaded.
• Low coolant level.
• Loose or damaged fan belt.
• Dirty radiator core or grille screens.
• Coolant flow route corroded.
Cause
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ENGINE TROUBLESHOOTING
Remedy
Check the fuel tank and the fuel filter.
Replace filter if necessary.
Check the fuel valve position.
Check to see if the fuel line coupler bolt
and nut are tight.
Bleed the fuel system. (See SERVICE
AS REQUIRED on page 106.)
Use oils of different viscosities, depend-
ing on ambient temperatures.
Clean battery cables and terminals.
Charge the battery.
In cold weather, always remove the bat-
tery from the engine, charge and store it
indoors. Install it on the machine only
when the machine is going to be used.
Check the fuel valve position.
Check the fuel system.
Clean the element.
Remove load and allow the coolant to
cool.
Check the fuel valve position.
Refuel.
Bleed the fuel system if necessary.
Change the fuel and fuel filter.
Check the proper amount of oil.
Reduce engine load.
Heat the muffler by applying load to the
engine.
Check the injection nozzle.
Change the fuel and fuel filter.
Turn the engine on and wait for the en-
gine to warm-up.
Lower speed or reduce load.
Fill cooling system to the correct level;
check radiator and hoses for loose con-
nections or leaks.
Adjust or replace fan belt.
Remove all trash.
Flush cooling system.
ZD1611LF,ZD1611RLF,ZD1611RL