Note : The cloud point should be 6 °C (10 °F) below the lowest expected fuel temperature to
prevent clogging of fuel filter by crystals.
4.6.3. Water separator cleaning
DAEWOO recommends the fuel water separator to install between fuel tank and fuel injection
pump strongly.
Condensation formed in a partially filled tank promotes the growth of microbial organisms that
can clog fuel filters and restrict fuel flow and cause the engine power decrease before.
Drain the accumulated moisture of the water separator every 100 hours to prevent engine
damage.
4.6.4. Fuel filter exchange
•
Loosen the fuel filter by turning it
counter-clockwise with the filter
wrench. Discard the used filter a
designated place.
•
Wipe the filter fitting face clean.
•
Supply fuel to the new filter and apply
engine oil to the O-ring face lightly.
•
Turn the new filter until the filter O-ring
is fitted against the sealing face.
•
And then turn the filter cartridge about
3/4 ~1 turn with hands.
Fuel system bleeding
Whenever fuel filter is changed or the
engine is stopped by cause of the fuel
lack, the air of fuel line must be removed
as follows.
Bleed the fuel by manually operating the
priming pump with fuel filter outlet joint
bolt and injection pump bleeder screw
loosened.
•
Press the feed pump cap repetitively
until the fuel without bubbles comes
out from the bleeding plug screw.
•
After the whole air is pulled out, close
the plug screws of the filter and the pump.
•
Confirm the resistance of fuel delivery by repetition pressing of the feed pump cap, Pressure
and turn the priming pump cap simultaneously to close it.
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