Faults
MAN-Industrial diesel engines D2842 LE103
69
Carefully read the Operating Instructions before starting any work!
This is especially valid for the chapter on General Safety Instructions
and the safety instructions in each of the chapters.
Fault RemedyPossible cause
Engine knocking D Engine not at correct operating tempe
rature
D Valve clearance not OK
D Valves stick
D Piston pin or crankshaft bearing loose
D Piston ring broken
D Let engine warm to operating
temperature before running at
full load
D Check thermostat
Engine too "loud" D Intake or exhaust pipe leaks
D Timing gears worn, gear backlash too
large
D Valve clearance too large
D Turbine and compressor impeller in tur
bocharger dirty (rough running, out of
balance)
D Poly-V-belt slips
D Help from the manufacturer ser
vice
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