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Isuzu 20LE - Page 433

Isuzu 20LE
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DRIVEABILITY AND EMISSIONS 6E1-263
FUEL FILLER CAP
The Fuel Filler Cap includes a vacuum valve. If high vacuum
occurs in the fuel tank, the vacuum valve works to adjust the
pressure in order to prevent damage to the tank.
Inspection
Notice: Replace the fuel filler cap with the same type of filler
cap that was originally installed on the vehicle.
Check the seal ring in the filler cap for any abnormality
and for seal condition.
Replace the filler cap if any abnormality is found.
WARNING
REMOVE SLOWLY
FUEL SPRAY MAY
CAUSE INJURY
FUEL FILTER
Removal
1. Disconnect the negative battery cable.
2. Remove the fuel filler cap.
3. Disconnect the fuel line from the fuel filter on the engine
side.
4. Disconnect the fuel line from the fuel filter on the fuel
tank side.
5. Remove the bolt on the fuel filter holder.
6. Remove the fuel filter.
Inspection
1. Replace the fuel filter when the following occur:
Fuel leaks from the fuel filter body
The fuel filter body is damaged
The fuel filter is clogged with dirt or sediment
2. If the drain hole is clogged with dust, clean the drain hole
with air.

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