- 12 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
22
FUEL
CIRCUIT
POSSIBLE CAUSE
ELECTRIC
SYSTEM
MAINTENANCE
SETTINGS REPAIRS
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
Obstructed fuel line
Fuellterclogged
Air or water leaks in fuel system
The tank cap vent hole is clogged
No fuel
Discharged battery
Cable connection uncertain or incor-
rect
Faulty starting switch
Faulty starting motor
Faulty glow plugs
Faulty glow plug control relay
Burnt fuse on preheating spark plugs
Cloggedairlter
Excessive idle operation
Incomplete run-in
Overloaded engine
Incorrect governor linkage
adjustment
Governor spring broken or unhooked
Low idle speed
Rings worn or sticking
Worn cylinder
Worn main con rod-rocker arm be-
arings
Badly sealed intake valve
Damaged cylinder head gasket
Defective timing system
Bent rods
Faulty hydraulic tappets
POSSIBLE CAUSES AND TROUBLE SHOOTING
THE ENGINE MUST BE STOPPED IMMEDIATELY WHEN:
1) - The engine rpms suddenly increase and decrease
2) - A sudden and unusual noise is heard
3) - The colour of the exhaust fumes suddenly darkens
4) - The oil pressure indicator light turns on while running.
TABLE OF LIKELY ANOMALIES AND THEIR SYMPTOMS
The following table contains the possible causes of some failures which may occur during operation.
Always perform these simple checks before removing or replacing any part.
TECHNICAL INFORMATION
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