wsm M6040 Workshop Manual page 134

M6040, M7040, WSM
Symptom
Engine Revolution Is
Not Smooth
Either White or Blue
Exhaust Gas Is
Observed
Oil Leak into Exhaust
Pipe or Suction Pipe
Either Black or Dark
Gray Exhaust Gas Is
Observed
Probable Cause
Fuel filter clogged or dirty
Air cleaner clogged
Fuel leak due to loose injection pipe retaining nut Tighten retaining nut
Injection pump malfunctioning
Incorrect nozzle opening pressure
Injection nozzle stuck or clogged
Governor malfunctioning
Turbocharger bearing worn out
Turbocharger shaft bent
Turbocharger fin or other part damaged due to
foreign matters
Excessive engine oil
Piston ring and cylinder worn or stuck
Incorrect injection timing
Waste oil pipe clogged or deformed
Turbocharger's piston ring seal faulty
Overload
Low grade fuel used
Fuel filter clogged
Air cleaner clogged
Deficient nozzle injection
Replace
Clean or replace
Repair or replace
Repair or replace
Repair or replace
Repair
Replace the
turbocharger
assembly
Replace the
turbocharger
assembly
Replace the
turbocharger
assembly
Reduce to specified
level
Repair or replace
Adjust
Repair or replace
Replace the
turbocharger
assembly
Reduce the load
Use specified fuel
Replace
Clean or replace
Repair or replace
nozzle
1-S2
ENGINE
Reference
Solution
Page
G-32
G-24
1-S37
1-S20,
1-S49
1-S21,
1-S37
1-S21,
1-S37
1-S44,
1-S45,
1-S46,
1-S47
1-S35
1-S35
1-S35
G-19
1-S56,
1-S74,
1-S78
1-S19
–
1-S35
–
G-10
G-32
G-24
1-S21,
1-S37
KiSC issued 07, 2012 A