1991 Cadillac Deville decrease in gas milage

1991 CADILLAC DEVILLE
167,000 MILES • V8 • FWD • AUTOMATIC
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MOODOE79
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my gas milage has been cut in half and i have developted a miss when ever i get on the throttle.I have tryed stp fuel injector cleaner and fuel treatmant. nothing has worked please help me figure out.
Feb 14, 2008 at 7:45 AM
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BUZZSAW
  • ✓ASE Certified Mechanic
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[quote:b6638d9bcd="moodoe79"]Other Category problem
1991 Cadillac Deville V8 Front Wheel Drive Automatic 167000 miles
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my gas milage has been cut in half and i have developted a miss when ever i get on the throttle.I have tryed stp fuel injector cleaner and fuel treatmant. nothing has worked please help me figure out.[/quote:b6638d9bcd]

its time to replace thoes injectors
Feb 15, 2008 at 4:10 PM
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