I AM GETTING TERRIBLE GAS MILEAGE

  • Tiny
  • danielraffensparger
  • 1994 Oldsmobile Cutlass

What is causing the sudden heavy fuel consumption on 1994 oldsmobile cutlass supreme

Wednesday, December 7th, 2011 AT 9:00 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Could be needing a major tune-up/running too rich

1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system

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Wednesday, December 7th, 2011 AT 9:05 PM

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