Fuel System (6.8 L Engine)

CAUTION: Always shut OFF engine, set parking brake and remove key before performing maintenance work on fuel filters.

Close fuel shut off on fuel tank.

Open drain (A) to inspect fuel system for water in primary fuel/water separator filter (B). (See Service Engine section).

Open drain (C) to inspect fuel system for water in secondary fuel filter (D). (See Service Engine section).

If problem persists change fuel filters. (See Service Engine section).

A-Drain
B-Primary Fuel/Water Separator Filter
C-Drain
D-Secondary Fuel Filter

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