6-24
TROUBLESHOOTING
OTHER SYMPTOMS
Symptoms Major causes Remedies
Engine exhaust is
occasionally black
• Air cleaner is clogged • Clean the air cleaner.
Refer to page 5-38.
• Engine control system is
faulty.
• Adjust or repair (ask your
sales or service dealer).
• Fuel line is faulty. • Adjust or repair (ask your
sales or service dealer).
• Clogging in the exhaust line. • Adjust or repair (ask your
sales or service dealer).
• DPF is faulty. • Adjust or repair (ask your
sales or service dealer).
Irregular noise is produced
from the engine
(combustion or mechanical
noise)
• Low quality fuel is being
used
• Replace the fuel.
• Engine is overheating • Refer to “If the engine
overheats” on page 6-3.
• Damage inside the muffler • Replace the muffler.
For replacement, ask your
sales or service dealer.
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