- 13 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
2
INJECTION
LUBRICATION
CIRCUIT
COOLING
CIRCUIT
Damaged injector
Injection pump valve damaged
Injector not adjusted
Faulty fuel feeding pump
Hardened pump control rod
Broken or loose supplementary start-
up spring
Worn or damaged pumping element
Incorrect tuning of injection components
(delivery balancing advance)
Cracked or broken precombustion
chamber
Oil level too high
Oil level low
Oil pressure valve blocked or dirty
Worn oil pump
Oil sump suction line clogged
Faulty pressure gauge or pressure
switch
Blocked draining pipe
Faulty spray nozzles (Turbo engines
only).
Blocked draining pipe
Alternator fan belt loose or torn
Clogged radiator exchange surface
Insufcientcoolant
Fault fan, radiator or radiator plug
Faulty thermostatic valve
Blockage inside the radiator or the
coolant ducts
Coolant leaking from radiator, hoses,
the crankcase or from the water pump
Faulty or worn water pump
POSSIBLE CAUSE
Inadequate
performance
High noise
level
Overheats
TROUBLE
Engine does
not start
Engine starts
but stops
No acceleration
Non -uni for m
speed
Black smoke
White smoke
Too low oil
pressure
Excessive oil
consumption
Technical information
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