Installation Instructions
81700'82100·82400
WSM,11770
TROUBLESHOOTING
1
ENGINE
Symptom
Probable
Cause
Solution
Reference
Page
Engine Does
Not
•
No fuel
Replenish fuel
-
Start
•
Air
in
the
fuel system
Vent
air
G-25
•
Water
in
the
fuel system Replace fuel and
-
repair
or
replace fuel
system
•
Fuel
pipe clogged Clean
-
•
Fuel
filter
clogged Clean
or
replace
G-18, G-22
•
Excessive
high
viscosity
of
fuel
or
engine oil
Use
the
specified
-
at
low
temperature
fuel
or
engine oil
•
Fuel
with
low
cetane number
Use
the
specified
-
fuel
•
Fuel
leak due
to
loose injection pipe
Tighten
nut
1-519
retaining
nut
•
Incorrect injection
timing
Adjust
1-547
•
Fuel
camshaft
worn
Replace
1-526
•
Injection nozzle clogged
Clean
1-548
•
Injection
pump
malfunctioning
Repair
or
replace 1-524, 1-549
•
Fuel
lift
pump
malfunctioning
Replace
1-523
•
5eizure
of
crankshaft, camshaft, piston,
Repair
or
replace
1-524, 1-526
cylinder
or
bearing
1-529, 1-543
• Compression leak from cylinder
Check compression 1-517
pressure
• Improper valve seat alignment, valve spring Repair
or
replace
1-531
broken, valve seized
• Improper valve
timing
Correct
or
replace
1-526, 1-535
timing
gear
•
Piston ring and cylinder
worn
Correct
or
replace
1-538, 1-543
•
Excessive
valve clearance
Adjust
1-18
Engine Revolution
Is
•
Fuel
filter
clogged
or
dirt
Clean
or
replace G-18,
G-22
Not
Smooth
•
Air
cleaner clogged Clean
or
replace
G-18
•
Fuel
leak
due
to
loose injection pipe
Tighten
nut
1-519
retaining
nut
•
Injection
pump
malfunctioning
Repair
or
replace
1-524, 1-549
•
Incorrect nozzle opening pressure Adjust
1-548
•
Injection nozzle stuck
or
clogged
Repair
or
replace
1-520,1-550
•
Fuel
over
flow
pipe clogged
Clean
-
•
Governor
malfunctioning
Repair
1-525
Either
White
or
Blue
•
Excessive
engine oil
Reducetothe
1-511
Exhaust
Gas
Is
specified level
Observed
• Piston ring and
liner
worn
or
stuck
Repair
or
replace
1-528, 1-538
•
Incorrect injection
timing
Adjust
1-547
•
Deficient compression
Check comp-ression
1-517
pressure
1-51