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TD-POWER MARINE
7.
Tracking faults
7.1
Engine doesn’t start
If the start motor does not turn over, check whether the battery is flat. Use a
hydrometer to measure the specific gravity of the electrolyte. Check that the cables
for the battery and starter motor are properly connected. If the battery is sufficiently
charged and you hear a clicking noise from the starter solenoid when the starter ky
is turned, the start motor itself maybe defective. If you cannot hear this clicking noise
then there maybe a defect in the solenoid, the key switch or the wiring for them.
7.2
Engine does not start, or stalls
If the start motor does turn over, but the engine either will not start, or keeps stalling,
check that you have fuel in the fuel tank and that the fuel cock is open. If the engine
is fitted with an extra fuel filter, there should be fuel visible in the glass or metal optic.
Check that fuel is reaching the injectors by unscrewing the pressure pipe on the
injector, and then turn the engine over using the starter motor. If no fuel appears it
may mean that the filter is blocked, the fuel pump is defective, or that there is air in
the system. Change all the filters and vent the system. If not fuel appears after this,
either the feed pump or the injector pump maybe defective.
If fuel does come out of pressure pipe when you carryout this test, it may mean that
one of the injectors is defective. Change the injectors and try to start the engine
again. If the engine still will not start the fault is probably in the injector pump. You
should take it to a professional. Check the position of the stop cable.
7.3
Uneven running or excessive vibration
Most interferences in engine running are caused by defects in the fuel supply
system, which in turn are often the result of water, air or impurities getting into the
fuel. You should therefore change all the filters and vent the system, and perhaps
change the injectors. Check that all fuel pipes are properly connected.
Rather more infrequently, it may be that the trouble is caused by loss of
compression in one or more of the cylinders. Compression should be checked by
professional.
7.4
Engine over heats
If the engine is overheating, check to see if:
The thermostat is faulty
The impeller is defective
The cooling water intake or jackets are blocked. (if yes, dismantle and clear them)
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