TROUBLESHOOTING
TECHNICAL
TROUBLE
The causes of engine malfunctions are classified by three elements of the diesel engine.
Three diesel engine elements
I
fue(?Gttion
I
Fuel tank, fuel feed pump, fuel strainer, injection pump, injection nozzle, etc.
Three
elements
Main function parts
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Good
/
Glow plug, preheating timer, etc.
preheating
Good
compression
The basic elements are described above, but malfunctions can also occur due to insufficient maintenance.
Be sure to check the following items as a pre-inspection.
Engine unit (INIEX valves, piston ring, cylinder, etc.)
I
Fan belt
I
Looseness in engine parts
I
Pre-inspection items
Coolant
Engine oil
Battery and terminal
Air cleaner
Engine start difficult or
impossible
Injection nozzle
Glow plug
Injection timing
Idling speed condition
List
of
described items
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Engine does not crank normally
I
P.l-3
I
Engine does not start easily or does not start at all
I
P.l-4
Page
Condition
I
I
1
Engine malfunctions or stops while idling
1
P.l-5
Malfunction description
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Insufficient output (including hunting)
I
P.l-6
I
Engine malfunction
I
Cannot accelerate smoothly (including breathing)
I
P.l-5
I
High fuel consumption
I
-
I
P.l-7
I
I
Frequent diesel knocking
I
-
I
P.l-8
Engine overheating
-
1
P.l-6
Unusual engine sound
Large amount
of
exhaust
smoke while driving
I
Sound that is often heard while idling
I
Sound that is often heard only at a certain engine speed
I
P.1-10
Large amount of black smoke is generated
Large amount of white smoke is generated
Sound that changes when the clutch pedal is operated
P.l-8
P.l-8
P.l-9
High engine oil consumption
Sound that is often heard in all engine speed ranges
-
P.1-I1
P.l-12
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