wsm BX1800 Workshop Manual page 78

BX1800 · BX2200, 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
• Deficient nozzle injection
• Incorrect injection timing
• Engine's moving parts seem to be seizing
• Uneven fuel injection
• Deficient nozzle injection
• Compression leak
• Piston ring's gap facing the same direction
• Oil ring worn or stuck
• Piston ring groove worn
• Valve stem and valve guide worn
• Oil leaking due to defective seals or packing
• Injection pump's plunger worn
• Deficient nozzle injection
• Injection pump broken
• Head gasket defective
• Cylinder block or cylinder head flawed
• Engine oil insufficient
• Oil strainer clogged
• Oil filter clogged
• Relief valve stuck with dirt
• Relief valve spring weaken or broken
• Excessive oil clearance of crankshaft bearing
• Excessive oil clearance of crankpin bearing
• Excessive oil clearance of rocker arm
• Oil passage clogged
• Different type of oil
• Oil pump defective
• Different type of oil
• Relief valve defective
Loosen load
Use specified fuel
Replace
Clean or replace
Repair or replace
nozzle
Adjust
Repair or replace
Repair or replace
injection pump
Repair or replace
nozzle
Replace head
gasket, tighten
cylinder head screw,
glow plug and nozzle
holder
Shift ring gap
direction
Replace
Replace piston
Replace
Replace
Replace pump
element or injection
pump
Repair or replace
nozzle
Replace
Replace
Replace
Replenish
Clean
Replace
Clean
Replace
Replace
Replace
Replace
Clean
Use specified type of
oil
Repair or replace
Use specified type of
oil
Replace
1-S2
ENGINE
Reference
Solution
Page
–
G-7
G-18
G-18
1-S67
1-S66
–
–
1-S69
1-S20
1-S50
1-S50
1-S50
1-S39
–
–
1-S69
1-S26, S30
–
1-S38
–
–
G-12
–
–
1-S55, S56
1-S53, S54
1-S42
–
G-7
1-S62
G-7
–
W10143220
KiSC issued 07, 2006 A