Landa PDHW5-35624E, Operator'S Manual

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22
Maintenance
Engine Troubleshooting
POSSIBLE CAUSES
SYMPTOM
Low fuel level X X X
Fuel supply/return lines clogged X X X X
Clogged fuel tank vent X X
Fuel pump faulty X X X
Fuel entrained with air X X X X
Unit injector(s) faulty/worn X X X X X X X
Unit injector settings incorrect X X X X X X X
Injection pump rack sticking X X X
Oil level too high X X X X X X X
Improper oil viscosity X X X
Oil diluted by fuel X X X X X
Oil pressure relief valve faulty X
Oil pick-up tube clogged X
Oil pump air entrained at pick-up tube X
Glow plugs faulty X X
Glow plug controller faulty X
Glow plug relay inoperable X
Starter defective X
Battery voltage too low X
Battery-cable connections corroded X
Key switch defective X
Air filter clogged X X X X X X X
Excessive idle/light load operation X X X X
Incomplete engine run-in X X X
Engine overload X X X X X X X
Excessive parasitic load X X X
Valve lash insufficient/excessive X X X X
Injection timing out of spec-advanced X X X X X
Injection timing out of spec-retarded X X X
Governor linkage adjustment
incorrect
X X X X
Governor spring fatigued or defective X X X
Idle rpm too low X X
Piston rings worn or stuck X X X X X
Piston worn or damaged X X X X X X X
Cylinders worn or damaged X X X X X X X
Valve(s) guide(s) worn X X X X X
Valves sticking X X X X X X X
Bearings (main/road) worn X X X
Governor linkage malfunction X X X X X
Cylinder head gasket damaged X X X
Thermostat stuck or malfunctioning X
Engine seized X
Radiator clogged (external or internal) X
Coolant pump faulty X
Turbocharger faulty X X X X X X X
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
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