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1988 Oldsmobile Ciera FUEL CONSUMPTION

Tiny
JJKJ
  • MEMBER
  • 1988 OLDSMOBILE CIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 157,000 MILES
Hi, my 1988 Olds Cierra started using excessive fuel. Had injectors cleaned, new spark plugs, checked plug wires. Recently had new catalytic conv. And muffler put on. Could my problem be the fuel pressure regulator & if so what should the normal pressure read. Thank you for any help you can give.
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Saturday, April 25th, 2009 AT 6:44 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Checking the fuel pressure you can rule out a defective fuel pressure regulator with and w/o vacuum to it and a clogged return line-

TBI fuel pressure 9-13psi

PFI could range from 60-90psi
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Saturday, April 25th, 2009 AT 7:04 PM

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