Symptom
Probable Cause
Solution
• Not fuel
Replenish fuel
• Air in the fuel system
Vent air
• Water in the fuel system
Change fuel and repair or flush
fuel system
• Fuel pipe clogged
Clean
• Fuel filter clogged
Clean or replace
• Excessively high viscosity of fuel or
Use the specified fuel or engine
engine oil at low temperature
oil
• Fuel with low cetane number
Use the specified fuel
• Fuel leak due to loose injection
Tighten nut
pipe retaining nut
• Incorrect injection timing
Adjust
Engine Does
• Fuel camshaft worn
Replace
Not Start
• Injection nozzle clogged
Clean or replace
• Injection pump malfunctioning
Repair or replace
• Fuel transfer pump malfunctioning
Repair or replace
• Seizure transfer pump malfunctioning
Repair or replace
piston, cylinder bore or bearing
• Compression leak from cylinder
Replace head gasket, tighten
cylinder head screw
glow plug and nozzle holder
• Improper valve seating, valve
Repair or replace
spring broken, valve seized
• Improper valve timing
Correct or replace timing gear
• Piston ring and bore worn
Repair or replace
• Excessive valve cleaner
Adjust
• Battery discharged
Charge
(Starter Does
• Starter malfunction
Repair or replace
Not Run)
• Starter switch malfunction
Repair or replace
• Wiring disconnected
Connect
• Fuel filter clogged or dirt
Clean or replace
• Air cleaner clogged
Clean or replace
• Fuel leak due to loose injection pipe
Tighten nut
Engine
retaining nut
Revolution
• Injection pump malfunctioning
Repair or replace
is Not Smooth
• Incorrect nozzle opening pressure
Adjust
• Incorrect nozzle stuck or clogged
Repair or replace
• Fuel over flow pipe clogged
Clean
• Governor malfunctioning
Repair
3. DISASSEMBLING AND SERVICING
3.1 TROUBLESHOOTING
ENGINE
