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#1
11-30-2010, 10:49 PM
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Running Rich
Have a 2002 F-150 Lighting Series 4.2 liter 6 cylinder 5 speed - It began bogging down and stalling - took it to run OMD and it's running rich...
Changed the fuel filter still having the same problem Any suggestions on what it could be or how to fix it??? 
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#2
11-30-2010, 11:12 PM
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Re: Running Rich
Check the air filter and air intake, just in case its blocked, has a dead rat in there, etc.
Scan the ECM for codes. Post back here with your findings if you like. Assuming it runs okay with no obvious misfires, I would suspect the oxygen sensor first, but there may be other issues.
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