Fault table
10
1.
Starter turns over engine only slowly or not at all
2
Starter motor turns engine, engine does not start
3.
Engine does not start while cold
4.
Engine does not run smoothly, and stops
5.
Speed fluctuations during operation
6.
Slow, periodic fluctuation of speed (approx. 0.5
−
1 Hz)
7.
Quick periodic fluctuation of speed (approx. 8
−
12 Hz)
8.
Engine cannot be switched off
9.
Performance unsatisfactory
10. Coolant temperature too high, coolant loss
11. Lubricating oil pressure varies / too low
12. Lubricating oil consumption too high
13. Fuel consumption too high
14. Black smoke
15. Blue smoke
16. White smoke
17. Engine knocks
Possible causes
x
Battery main switch in “off” position
x
Batteries flat
x
Battery cable connections loose or corroded
x x
x
Battery voltage at control unit is too low, see page 122
x
Starter electromagnetic switch sticking (clicks)
x
Cable connection from ignition lock to starter electromagnetic switch is loose or interrupted
x
Starter motor defective (carbon brushes loosened, coil damaged, ground fault)
x
Starter interlock relay defective
x x
Fuel tank empty
x x
Fuel valve shut
x x x x
x
Air in fuel system
x x x x
x
Fuel lines leaky, ruptured, clogged
x x x
x
Fuel filter / prefilter clogged
x
Fuel filter clogged with paraffin, see “Fuels, Lubricants...”
x
Fuel temperature too high
x x
x
x x
x
Unsuitable fuel, see “Fuels, Lubricants...”
x Fuel is slow to ignite, see “Fuels, Lubricants...”
x x
Suction height of fuel delivery pump (max. 1m) exceeded
x x
Fuel delivery pump faulty
x x
Air supply/exhaust gas pipes clogged
x x x
x x
x x Delivery start incorrect
x x x
x
Valve clearance not correct
x x
x
x x
x
Injectors defective, leaking, worn
x
x Injector needle sticking
x x x
x
x Compression insufficient
x
Inlet chamber pressure of injection pump too low
x
x
x
Injection pump defective
x
Excessive friction in power transmission “actuator-linkage-control rod”
x
Force of actuator too low
x x
Actuator does not move control rod, see page 123
x
“Actuator-linkage-control rod” transmission stiff / blocked
x x
Electro-hydraulic shut-off valve (EHAB) without current
x
Setting of the D proportion too small, see description of control unit
x
Setting of the D proportion too large, see description of control unit
x
Resonance vibrations in the drive / clutch, reduce sensitivity; see description of control unit
x
Control rod not in full-load position
x x
Speed pickup signal is inadequate, see page 124
x
Temperature in engine room too high, combustion air and fuel too hot
x
x x
Supply of combustion air insufficient, intake vacuum too high
Intake or exhaust manifold pipe leaky
x
Charge-air pipes leaky
x
Intercooler contaminated
