5-27
FUEL FILTER
Always replace the fuel filter according to the manufacturer’s
recommended interval. Failure to replace the fuel filter when needed may
lead to fuel system damage. Your authorized Isuzu dealer can inspect
your fuel filter and replace your fuel filter, if needed.
WATER SEPARATOR
The purpose of the water separator is to clean the fuel of any dirt
particles that can cause wear on the fuel injector’s sliding surface; and
to separate any water from the fuel that may have formed in the fuel
tank due to condensation. The water separator is located on the
bottom of the fuel filter.
NOTICE: To help avoid engine damage,
• When the water separator indicator light comes on, loosen the
drain plug under the fuel filter and move the priming pump up
and down by hand from 10 to 20 times. When doing this, do not
loosen the air bleeding plugs of the fuel filter and the priming
pump.
• Make sure that there is no leak of fuel from the drain plug and
that the indicator light is off after the engine is started.
• If fuel is spilt on the vehicle body, etc., wipe it clean.
• Right after draining, it takes more time than usual to start the
engine. If the engine cannot be started within 10 seconds, wait
some time and restart.
Refer to “Used engine oil” in page 5-24 for proper disposal procedures.
Air bleeding
Drain plug
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