2002 Ford Ranger engine runs rich

Tiny
ALECAT
  • 2002 FORD RANGER

Engine Performance problem
2002 Ford Ranger 6 cyl Two Wheel Drive Automatic 12000 miles

I have replaced 3 O2 sensors and the engine doesn't seem to run rich at rpm's below 3000. At 3000 the engine hesitates and begins to run rich with black smoke coming from the exaust.

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Tuesday, April 15th, 2008 AT 9:07 AM

1 Reply

Tiny
MERLIN2021
  • EXPERT
  • 17,581 POSTS

Check the engine coolant temp sensor, Fuel pressure, with particular attention to the pressure regulator...or cloggeg return line.
http://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.

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Tuesday, April 15th, 2008 AT 2:05 PM

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