92.4mm
STROKESERIES
\“JSM.0’1092
5-G
GENERAL
[4]
TROUBLESHOOTING
Symptom
ingine does not
;tart
Starter does not run
Engine revolution
is
not smooth
Either white or blue
exhaust gas
is
observed
~~~
Either
black or dark
gray exhaust gas
is
observed
Deficient output
Probable Cause
D
Nofuel
D
Air
in
the fuel system
D
Water
in
the fuel system
B
Fuel pipe clogged
B
Fuel
filter
clogged
B
Excessively
high
viscosity of fuel or
engine oil at low temperature
D
Fuel
with
low cetane number
D
Fuel leak due to loose injection pipe
retaining nut
Incorrect injection timing
Fuel cam shaft worn
‘
Injection nozzle clogged
Injection pump malfunctioning
Seizure of crankshaft, camshaft,
piston, cylinder liner
or
bearing
a
Compression leak from cylinder
0
Improper valve timing
0
Piston ring and liner worn
0
Excessive valve clearance
0
Battery discharged
0
Starter malfunctioning
0
Key switch malfunctioning
0
Wiring disconnected
0
Fuel filter clogged
or
dirty
0
Air cleaner clogged
Fuel leak due to loose injection pipe
retaining nut
0
Injection pump malfunctioning
Incorrect nozzle opening pressure
Injection nozzle stuck or clogged
0
Fuel over flow pipe clogged
0
Governor malfunctioning
0
Excessive engine oil
0
Piston ring and liner worn or stuck
0
Incorrect injection timing
0
Deficient compression
0
Overload
0
Low grade fuel used
0
Fuel filter clogged
0
Air cleaner clogged
0
Deficient nozzle injection
0
incorrect injection timing
0
Engine’s moving parts seem to be
a
Uneven fuel injection
0
Deficient nozzle injection
0
Compression leak
seizing
Solution
Replenish fuel
Vent air
Change fuel and repair or
replace fuel system
Clean
Clean
or
change
Use the specified fuel
or
engine oil
Use the specified fuel
Tighten nut
Adjust
Replace
Clean
Repair
or
replace
Repair
or
replace
Replace head gasket, tighten
cylinder head bolt, glow plug
and nozzle holder
Correct or replace timing
gear
Replace
Adjust
Charge
Repair or replace
Repair or replace
Connect
Clean or change
Clean or change
Tighten nut
Repair or replace
Adj ust
Repair or replace
Clean
Repair
Reduce to the specified level
Repair or replace
Adjust
Adjust top clearance
Lessen the load
Use the specified fuel
Clean or
change
Clean or change
Repair or replace the nozzle
Adjust
Repair or replace
Repair or replace the
injection pump
Repair or replace the nozzle
Replace head gasket, tighter
cylinder head
bolt,
glow
plu!
and nozzle holder
:eference
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