Troubleshooting – John Deere CD4039DF008 User Manual
Page 70
Troubleshooting
DPSG,CD03523,49
–19–10AUG99–1/5
ENGINE TROUBLESHOOTING
Symptom
Problem
Solution
Engine cranks but will not start
Incorrect starting procedure.
Verify correct starting procedure.
No fuel.
Check fuel in tank and manual
shut-off valve.
Exhaust restricted.
Check and correct exhaust
restriction.
Fuel filter plugged or full of water.
Replace fuel filter or drain water
from filter.
Injection pump not getting fuel or air
Check fuel flow at supply pump or
in fuel system.
bleed fuel system.
Faulty injection pump or nozzles.
Consult authorized diesel repair
station for repair or replacement.
Engine hard to start or will not
Engine starting under load.
Remove load.
start
Improper starting procedure.
Review starting procedure.
No fuel.
Check fuel tank.
Air in fuel line.
Bleed fuel line.
Cold weather.
Use cold weather starting aids.
Slow starter speed.
See “Starter Cranks Slowly”.
Crankcase oil too heavy.
Use oil of correct viscosity.
Improper type of fuel.
Consult fuel supplier; use proper
type fuel for operating conditions.
Water, dirt or air in fuel system.
Drain, flush, fill and bleed system.
Clogged fuel filter.
Replace filter element.
Dirty or faulty injection nozzles.
Have authorized servicing dealer or
engine distributor check injectors.
55-1
112699
PN=70
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