Car Problem Reports

Ford Excursion Oil in fuel system due to injector seal leaks

Ford Excursion Problem
3 Reports
Me Too

Model Years Affected: 2001, 2002, 2003

Engine Affected: 7.3L V8 Diesel Turbo


When changing the fuel filter, if the fuel in the filter bowl looks gray or black, it may be a sign that the fuel injector O-rings are allowing high pressure oil to migrate into the fuel return system.  Symptoms of this are rough idle or hard starting.

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