90
4. Coolant temperature too low
CAUSE
● Faulty thermostat
REMEDY
Install a new thermostat
5. Engine does not reach correct speed
at wide open throttle (WOT)
CAUSE
● Boat abnormally loaded
● Fouling on bottom of boat
● Faulty/damaged propeller
● Insufficient fuel flow
– fuel filters clogged (due to contaminants/paraf-
fin precipitation in the fuel as a result of low
outside temp.)
● Water in fuel
● Insufficient air flow to engine
– air cleaner filter clogged
– air leak between turbo and engine’s inlet mani-
fold
– faulty turbocharger
– poor engine compartment ventilation
● Throttle controls incorrectly adjusted
● Charge air cooler blocked
● Faulty by-pass valve*
● Excessive back pressure in exhaust system
● Faulty injectors
● TAMD72P: EDC system has temporarily reduced
engine output due to alarm limit being exceeded.
● Faulty setting of injection pump
● Fault in smoke limiter**
– smoke limiter seizing
– pressure pipe between inlet manifold and
smoke limiter leaking
– faulty diaphragm in smoke limiter
– faulty setting
* TAMD63 and TAMD72 have no by-pass valve.
** TAMD72P engines are not equipped with a smoke limiter.
REMEDY
If possible, reduce/redistribute the load
Clean the bottom of the boat and treat it with anti-
fouling paint
Replace the propeller
Fit new fuel filters (pre-filter and/or fine filters). Vent
the system as shown on page 50
Clean fuel tank. Drain water from pre-filter.
Fit new air cleaner filters/clean air cleaner filter
Check the rubber hose between the turbo and the
connecting pipe, plus other connections. Tighten the
hose clips
Contact authorized service personnel
Check that the ventilating ducts to the engine com-
partment are not blocked
Adjust the throttle controls
Clean the insert(s) as shown on page 56–58
Contact authorized service personnel
Check that the exhaust pipe is not restricted in any
way
Get authorized service personnel to check the injec-
tors
Check any diagnostic trouble codes (DTC) set, see
page 92. Correct malfunction cause.
Contact authorized service personnel
Contact authorized service personnel
Fit a new pressure line
Contact authorized service personnel
Contact authorized service personnel
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