Yanmar 3TNV82A Service Manual page 365

Troubleshooting Charts
Trouble Symptom Starting Problem
Cause
Stop Solenoid Failure O
Too Early Timing of Fuel Injection Pump
Too Late Timing of Fuel Injection Pump
Incorrect Diesel Fuel
Water in Fuel System O
Clogged Fuel Filter O
Air in Fuel System O
Clogged or Cracked Fuel Line O
Insufficient Fuel Supply to Fuel Injection Pump O
Uneven Injection Volume from Fuel Injection
Pump
Excessive Fuel Injection Volume
Poor Spray Pattern from Fuel Injection Nozzle
Priming Failure O
Clogged Strainer at Feed Pump Inlet
TNV DI Service Manual
Poor
Insufficient
Exhaust
Engine Output
Color
Engine Starts
During
But Stops Exhaust Color
Work
Soon.
Exhaust
Smoke
O
O O O
O O O O
O O O O O
O O O
O O
O O
O O
O O
O O O O
O
O O O O
O
Engine
Engine Oil
Surging
O
O
O
O O O
O O O O
O O O
O O O O O
Engine
Air Intake
Coolant
Corrective Action
Check and Replace
Check and Adjust.
O Check and Adjust.
Use Correct Fuel Oil.
Draining the Fuel Filter.
Clean or Replace.
Bleed the Air.
Clean or Replace.
Check the Fuel Tank Cock, Fuel Filter,
Fuel Line, and Fuel Feed Pump.
O Check and Adjust.
O O O Check and Adjust.
Check and Adjust.
Foreign Matter Trapped in the Valve
Inside the Priming Pump (Disassemble
and Clean).
Clean the Strainer.
TROUBLESHOOTING
Reference Page
See Stop Solenoid on page 7-6.
See Checking and Adjusting Fuel
Injection Timing on page 7-26.
See Checking and Adjusting Fuel
Injection Timing on page 7-26.
See Diesel Fuel Specifications on
page 4-9.
See Drain Fuel Filter / Water Separator
on page 5-23.
See Clean Fuel Filter / Water Separator
on page 5-33.
See Priming the Fuel System on
page 4-12.
See Testing of Fuel Injectors on
page 7-33.
See Testing of Fuel Injectors on
page 7-33.
See Testing of Fuel Injectors on
page 7-33.
See Fuel System Components on
page 7-12.
14-15