1994 Ford F150 fuel black smoke

1994 FORD F-150
145,000 MILES • V8 • 2WD • AUTOMATIC
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SRCH
  • MEMBER
  • 1 POST
engine runs rough like to mutch fuel
May 16, 2010 at 9:41 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1.Fuel pressure not within specs.Can be cause by restricted fuel return line or defective fuel pressure regulator.
2.Defective Oxygen Sensors.
3.Leaking injectors.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
May 16, 2010 at 5:38 PM
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