Car Problem Reports

Ford Excursion Oil in fuel system due to injector seal leaks

 
Ford Excursion Problem
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Model Year Affected: 2000

Engine Affected: 7.3L V8 Diesel Turbo

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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.