TROUBLESHOOTING
58
8LV Series Operation Manual
TROUBLESHOOTING AFTER
STARTING
Just after the engine has started, check the
following items at a low engine speed:
Is sufficient water being discharged from the
seawater outlet pipe?
If the discharge is low, stop the engine immediately.
Identify the cause and repair.
Is the exhaust color normal?
The continuous emission of black exhaust smoke
indicates engine overloading. This shortens the
engine’s life and should be avoided.
Are there abnormal vibrations or noise?
Depending on the hull structure, engine and hull
resonance may suddenly increase at certain
engine speed ranges, causing heavy vibrations.
Avoid operation in this speed range. If any
abnormal sounds are heard, stop the engine and
inspect for cause.
Alarm sounds during operation.
If the alarm sounds during operation, lower the
engine speed immediately, check the warning
lamps and stop the engine for repairs.
Is there water, oil or fuel leakage? Are there any
loose bolts or connections?
Check the engine room daily for any leaks or loose
connections.
Is there sufficient fuel in the fuel tank?
Refill fuel in advance to avoid running out of fuel. If
the tank runs out of fuel, bleed the fuel system. See
Bleeding the Fuel System on page 22.
When operating the engine at low speed for
long periods of time, rev up the engine once
every 2 hours. Revving up the engine with the
marine gear in NEUTRAL, accelerate from the
low speed position to the high speed position
and repeat this process about five times. This is
done to clean out carbon from the cylinders and
the fuel injection valves.
Neglecting to rev up the engine will result in poor
exhaust color and reduce engine performance.
Periodically operate the engine near maximum
speed while underway. This will generate higher
exhaust temperatures, which will help clean out
hard carbon deposits, maintain engine
performance and prolong the life of the engine.
8LV_OPM.book 58 ページ ２０１１年１月１１日 火曜日 午後１２時８分
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