Manual

TROUBLESHOOTING
TNV IDI Service Manual
13-13
Troubleshooting Charts
Trouble Symptom Starting Problem
Insufficient Engine Output
Poor Exhaust Color
High Knocking Sound During Combustion
Abnormal Engine Sound
Uneven Combustion Sound
Engine Surging
Excessive Engine Vibration
Difficulty in Returning to Low Speed
Excessive Fuel Consumption
Engine Oil
Excessive Blow-by Gas
Engine Coolant
Air Intake
Exhaust Temperature Rise
Corrective Action Reference Page
Engine Does Not Start.
Engine Starts but Stops Soon.
Exhaust Color
During Work
During Idling
During Work Operation
Excessive Oil Consumption
Dilution by Diesel Fuel
Oil with Water
Low Oil Pressure
Overheat
Low Water Temperature
Pressure Drop
Pressure Rise
Exhaust Smoke
Ordinary
White
Black
White
Black
Cause
None
Little
Much
Fuel System
Too Early Timing of Fuel Injection Pump O O O Check and Adjust.
See “Checking and Adjusting Fuel
Injection Timing” on page 7-19.
Too Late Timing of Fuel Injection Pump O O O O Check and Adjust.
See “Checking and Adjusting Fuel
Injection Timing” on page 7-19.
Incorrect Diesel Fuel O O O O O O Use Correct Fuel Oil.
See “Diesel Fuel Specifications” on
page 4-9.
Water in Fuel System O O O O O O O Draining the Fuel Filter.
See “Drain Fuel Filter / Water
Separator” on page 5-21.
Clogged Fuel Filter O O O Clean or Replace.
See “Drain Fuel Filter / Water
Separator” on page 5-21.
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