TROUBLESHOOTING
91
Engine does not Start
Starter motor operates but
engine does not start
No diesel fuel
Refuel and prime fuel
system
Filling the Fuel Tank on
page 41
Air in fuel system
Prime fuel system
Priming the Fuel System on
page 42
Improper diesel fuel
Replace with
recommended diesel fuel
Diesel Fuel Specifications
on page 36
Clogged fuel filter
Replace fuel filter
Replace fuel filter (element)
on page 79
Poor fuel injection
See Isuzu Distributor
–
Compressed air leakage
from intake/exhaust valves
–
Faulty engine stop solenoid
–
Starter motor does not
operate or rotates too
slowly (engine can be
turned manually)
Battery needs charging
Check electrolyte, recharge
Check battery and recharge
on page 73
Faulty cable connection at
battery terminals
Clean terminals, retighten
–
Faulty starter switch
See Isuzu Distributor
–
Faulty starter motor
–
Engine cannot be manually
turned
Inner parts seized or
damaged
–
White or black exhaust smoke
Black exhaust smoke
Engine overloaded
Reduce load
–
Clogged air cleaner
element
Clean element or replace
Clean air cleaner element
on page 78
Improper diesel fuel
Replace with
recommended diesel fuel
Diesel Fuel Specifications
on page 36
Faulty spraying of fuel
injection
See Isuzu Distributor
–
Excessive intake/exhaust
valve clearance
–
Faulty EGR valve
–
White exhaust smoke
Improper diesel fuel
Replace with
recommended diesel fuel
Diesel Fuel Specifications
on page 36
Faulty spray pattern of fuel
injection
See Isuzu Distributor
–
Fuel injection timing delay
–
Engine burning oil
–
Symptom
Probable cause
Action
Refer to
TNV_OperationManual_T4(under 19kW).book Page 91 Wednesday, June 17, 2015 11:23 AM