1--6
62--11161
1.5 TROUBLESHOOTING (Continued)
Symptom
Probable Cause
Solution
Reference
Either Black or Dark
Exhaust Gas Is
Observed
Overload
Lesson load
--
Low grade fuel used
Use specified fuel
--
Fuel filter clogged
Clean or change
--
Air cleaner clogged
Clean or change
--
Deficient nozzle injection
Replace nozzle
5.2.4
Deficient Output
Incorrect injection timing
Adjust
5.1.1
Engine’s moving parts seem to be seizing
Repair or replace
--
Uneven fuel injection
Replace injection
pump
2.2.6.a
Deficient nozzle injection
Repair or replace
nozzle
5.2.4
Compression leak
Check the
compression
pressure and repair
2.1.1
Excessive Lubricant
Oil Consumption
Piston ring’s gap facing the same direction
Shift ring gap
direction
2.2.7.b
Oil ring worn or stuck
Replace
2.3.3.d
Piston ring groove worn
Replace worn piston
2.3.3.e
Valve stem and valve guide worn
Replace
2.3.1.d
Oil leaking due to defective seals or packing
Replace
--
Fuel Mixed into
Lubricant Oil
Injection pump’s plunger worn
Replace Injection
pump
5.1
Deficient nozzle injection
Replace nozzle
5.2.4
Injection pump broken
Replace
5.1
Water Mixed into
Lubricant Oil
Head gasket defective
Replace
2.2.4.e
Cylinder block or cylinder head flawed
Replace
--
Low Oil Pressure
Engine oil level low
Replenish
--
Oil filter cartridge clogged
Replace
--
Relief valve stuck with dirt
Clean
3.1.5
Relief valve spring weak or broken
Replace
3.1.5
Excessive clearance of crankshaft bearing
Replace
2.3.4.d
Excessive clearance of crankpin bearing
Replace
2.3.4.c
Excessive clearance of rocker arm
Replace
2.3.1.k
Oil passage clogged
Clean
--
Incorrect oil type
Use specified type of
oil
--
Oil pump defective
Repair or replace
2.2.6.h/3.2
High Oil Pressure
Incorrect oil type
Use specified type of
oil
--
Relief valve defective
Replace
3.1.5
