2000 Nissan Patrol/Safari

Engine Performance problem
2000 Nissan Patrol/Safari 6 cyl Four Wheel Drive Manual 220000 miles

just woundering is there a feul filter at the rear tank.
as my 4.2 turbo nissan is loosing power and I have changed all filters
i have been told to check rear tank for a filter but can not see 1 there
this all seemed to happen after going through muddy water
Mck ward
April 10, 2009.

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