Why does my 1991 ford f-150 lariat xlt use up more gas than what is should? Im only getting like 8 miles a gallon..

Asked by Apr 02, 2012 at 10:51 AM about the 1991 Ford F-150

Question type: Maintenance & Repair

2 Answers

65

I'd say check ur sensors starting with ur o2 sensor! I've ran into that once before! Goodluck

295

also check plugs and wires. sometimes these go bad over time and, due to the firing not being at proper intervals, some of the gas won't fire. it is then discharged and wasted. replacing them will clean up the timing and firing and increase fuel efficiency. hope this helps

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