I run my car in normal use in highway and no traffic I spend $20 full tank 90 miles I replace my tires,spark plugs Oem ,Transmission fluid with filter,Engine oil with filter,Thermostat,antifreeze,Air filter,replace the Ignition Coils and no codes are present I just need some good person out there that can give a good advise on this issue what will be the next procedure to correct this dilemma for this issue started a month ago and Thanks.

  • Welcome to Motor Vehicle Maintenance & Repair! Feb 5, 2018 at 15:37
  • Have you had the vehicle checked for fuel leaks? Do you ever smell gas when you get out after driving it? Feb 5, 2018 at 21:25
  • No fuel leaks so far and I already check the front lines to the injectors and from the gas tank too.
    – Kiro
    Feb 6, 2018 at 0:10
  • no gas smell at all? Feb 6, 2018 at 19:04
  • Please provide fuel economy numbers before and after. Knowing the difference will assist with narrowing down what it could be. Mar 14, 2018 at 11:56

1 Answer 1


Have you checked your intake valves? its a longshot but maybe

  • My car have 127,000 miles on it and I always use Shell gas 91 octane and I don't think my intake valves are bad and thanks for the thought
    – Kiro
    Feb 7, 2018 at 14:12

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