- Unstable low idling
Crack in injection pipe.
Injection nozzle failure.
Engine stop solenoid return
failure.
Uneven compression pressure
between cylinders.
Unstable engine running -
76
Incorrect control lever
- Too high low idling speed.
-L
adjustment.
Governor interior
malfunction.
Engine hunting in medium
speed range.
- Governor spring deteriorated.
--E
Air in the fuel system
r
Insufficient fuel supply.
Clogged fuel filter
element
Piping failure (squeezed, etc.)
Malfunction in engine at
high speed range.
Uneven fuel injection amount between
plungers.
Deteriorated governor spring.
Incorrect valve clearance
adjustment.
Deteriorated valve spring.
Engine speed does not be
Engine control restriction or
lowered.
seizure.
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