wsm L3301 Workshop Manual page 165

L3301, L3901, L4701, WSM
Symptom
Either Black or Dark
Gray Exhaust Gas Is
Observed
Deficient Output
Excessive Lubricant
Oil Consumption
Fuel Mixed Into
Lubricant Oil
Water Mixed Into
Lubricant Oil
Low Oil Pressure
High Oil Pressure
Probable Cause
Overload
Low grade fuel used
Fuel filter clogged
Air cleaner clogged
Injector damaged
Engine's moving parts stuck
Supply pump damaged
Injector damaged
Compression leak
Air cleaner clogged
Breather hose or CCV clogged due to ice
Piston ring's gap points in the same direction
Oil ring worn or stuck
Piston ring groove worn out
Valve stem and guide worn out
Crankshaft bearing and crankpin bearing are
worn out
Injector damaged
Oil dilution due to regeneration
Head gasket damaged
Cylinder block or cylinder head flawed
Engine oil insufficient
Oil strainer clogged
Relief valve stuck with dirt
Excessive oil clearance of the bearings
Oil passage clogged
Different type of oil
Oil Pump damaged
Difference type oil
Relief valve damaged
Breather hose or CCV clogged due to ice
Decrease the load
Use the specified fuel
Change
Clean or change
Replace
Repair or replace
Replace
Replace
Check compression
pressure and repair
Clean or replace
element
Melt the ice in the
breather hose or
CCV, or Replace
Shift ring gap
direction
Replace
Replace piston and
piston ring
Replace
Replace
Replace
Change engine oil
Replace
Replace
Fill
Clean
Repair or replace
Replace the metal,
bushing or shaft
Clean
Use the specified type
of oil
Replace
Use the specified type
of oil
Repair or replace
Melt the ice in the
breather hose or
CCV, or Replace
1-S2
ENGINE
Reference
Solution
Page
–
G-10, G-11
G-39, G-66
G-29, G-58
1-S44
–
1-S49
1-S44
1-S11
G-29, G-58
1-S16,
1-S36
1-S56
1-S56
1-S55,
1-S56,
1-S74
1-S64
1-S75
1-S44
G-36, G-64
1-S46
1-S46
G-36, G-64
1-S54
–
1-S75,
1-S76,
1-S76
–
G-10, G-11
1-S53
G-10, G-11
–
1-S16,
1-S36
KiSC issued 09, 2016 A