Service manual

CHAPTER 2 8354/8404
2-24
D615-W02 May-2003
• Excessive engine oil
• Piston ring and bore worn or
piston ring stuck
• Incorrect injection timing
• Insufficient compression
• Over heated
• Low grade fuel used
• Fuel filter clogged
• Air cleaner clogged
• Incorrect injection timing
• Engine’s moving parts seem to
be seizing
• Uneven fuel injection
• Insufficient nozzle injection
• Compression leak
• Piston ring’s gap facing the
same direction
• Oil ring worn or stuck
• Piston ring groove worn
• Valve stem and guide worn
• Crankshaft bearings, and crank
pin bearings worn
• Injection pump plunger worn
• Fuel transfer pump broken
• Head gasket defective
• Cylinder block or cylinder head
cracked
• Engine oil insufficient
• Oil strainer closed
• Oil filter cartridge clogged
• Relief valve stuck with dirt
• Relief valve spring weak or
broken
• Excessive oil clearance of
crankshaft bearings
• Excessive oil clearance of crank
pin bearings
• Excessive oil clearance of rocker
arm bushings
• Oil passage closed
• Improper type of oil
• Oil pump defective
Reduce to the specified level
Repair or replace
Adjust
Adjust top clearance
Lessen the load
Use the specified fuel
Clean or replace
Clean or replace
Adjust
Repair or replace
Repair or replace the injection
pump
Repair or replace the nozzle
Replace head gasket, tighten
cylinder head screws and nuts,
glow plug and nozzle holder
Shift ring gap direction
Replace
Replace the piston
Replace
Replace
Replace pump element or pump
Replace
Replace
Replace
Replenish
Clean
Replace
Clean
Replace
Replace
Replace
Replace
Clean
Use the specified type of oil
Repair or replace
Symptom Probable Cause Solution
Either White or Blue Exhaust
Gas is Observed
Either Black or Dark Gray
Exhaust Gas is Observed
Insufficient Output
Excessive Lubrication Oil
Consumption
Fuel Mixed into
Lubricating Oil
Water Mixed Into Lubricating oil
Low Oil Pressure
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