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16. TROUBLESHOOTING
ENGINE (cont'd (16.6.3))
Problem
Exhaust gas is white or blue
Exhaust gas occasionally turns black
Combustion noise occasionally makes
breathing sound
Abnormal noise generated
(combustion or mechanical)
2-100
Main causes
•
Too much oil in oil pan
•
Improper fuel
•
Clogged air cleaner element
•
Defective nozzle
•
Defective compression
•
Defective turbocharger
•
Defective nozzle
•
Low grade fuel being used
•
Overheating
•
Damage inside muffler
•
Excessive valve clearance
Remedy
•
Add oil to specified level
see
"CHECK
BEFORE
STARTING"
•
Change to specified fuel
•
Clean
or
replace,
see
"WHEN REQUIRED"
(•
Replace nozzle)
(•
See defective compression
above)
(•
Clean or replace turbo-
charger)
(•
Replace nozzle)
•
Change to specified fuel
•
Refer to "Radiator water
level monitor lights up" as
above
(•
Replace muffler)
(•
Adjust valve clearance)
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