I am getting terrible gas mileage

Tiny
DANIELRAFFENSPARGER
  • MEMBER
  • 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 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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