low mpg

  1. MrFixIt

    8 mpg --> 03 2500 4x4 5.7L

    Have had this rig for about 5 years it has 187K now, 10K miles ago spun #8 bearing, replaced crank, timing set, and intake valves, etc... Engine runs great but gets 7.5 to 8.2 mpg. Possibly vacuum leak, but normally that includes a rough idle, but if vacuum issue so, where? Can smell gas in...
  2. ALuv4Fun

    Low MPG for 2016 Ram Sport w/Hemi

    I have a 2016 Ram Sport Quadcab 4x2 with 5.7 Hemi, 8-speed and 3.21 rear gearing. It has 16,000 miles on it and using the truck's fuel calibrator from mile 0, it has gotten 12.5 mpg. I have twice measured it myself after trips on the interstate and even then it managed only 17.5 mpg while on...

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