LTC Repair Caterpillar Engine Troubleshooting
wc_tx000476gb.fm 87
6.11 General Engine Troubleshooting
Possible Cause Symptom
Excess black smoke
Blue smoke
White smoke
Increased oil consumption
Unusual noises
Lack of power
Increased fuel consumption
Overheating
Hard starting/engine missing
Debris in oil filter
Dirty primary/secondary air cleaner • •••
Overfueling •
Overloading •
Worn rings/liners •
Worn seals ••
Worn valve products •
Leaking head gasket •
Cracked head or liners •
Faulty injector •
Incorrect starting procedure •
Incorrect fuel injection timing •
Low quality fuel ••
Worn or broken rings/liners •
Worn valve guides •
Malfunctioning fuel nozzle/injectors ••• •
Worn piston pin bushings •
Worn rod/main bearings •
Too much valve lash •
Dirty fuel filter •
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