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Useful information about failures

TABLE OF LIKELY ANOMALIES AND THEIR SYMPTOMS
THE ENGINE MUST BE STOPPED IMMEDIATELY WHEN:

  1. The engine rpms suddenly increase and decrease
  2. A sudden and unusual noise is heard
  3. The colour of the exhaust fumes suddenly darkens
  4. The oil pressure indicator light turns on while running

Tab 1.9

TROUBLES PROBABLE CAUSE
The engine does not start







 Incorrect injection timing
Rings worn or sticking
Valves sticking
Loose cylinder locknuts
Obstructed fuel line
Fuel filter clogged
Air leaks in fuel system
Clogged tank vent hole
Injector sticking
Faulty fuel feeding pump
Injection pump valve sticking
Discharged battery
Cable connections uncertain or incorrect
Faulty starting switch
Faulty starting motor
Starts and stops Clogged air filter
Governor linkage wrongly set
Low  idle speed
Fuel filter clogged
Air leaks in fuel system
Clogged tank vent hole
Faulty fuel feeding pump
Poor acceleration Clogged air filter
Ovrloaded
Incorrect injection timing
Governor linkage wrongly set
Governor spring broken
Fuel filter clogged
Air leaks in fuel system
Clogged tank vent hole
Hardened inj pump rack
Unsteady speed Governor linkage wrongly set
Air leaks in fuel system
Hardened inj. pump rack
Oil level too high
Black smoke Clogged air filter
Overloaded
Injector not adjusted
Extra fuel control level sticking
White smoke Excessive idle operation
Incomplete run-in
Incorrect injection timing
Rings worn or sticking
Worn cylinder
Fuel filter clogged
Air leaks in fuel system
Faulty fuel feeding pump
Faulty fuel feeding pump
Low oil pressure Worn main con rods bearings
Oil pressure sticking
Oil pressure regulator not adjusted
Worm oil pump
Air into oil suction line
Faulty pressure gauge or pressure switch
Oil suction line clogged

 

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