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help with mileage problem

Discussion in 'General Tech and Maintenance' started by andrew714, Sep 21, 2003.

  1. andrew714

    andrew714 Junior Member

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    my 1994 civic dx gets me only 200miles per tank. i used to get 350 easy. its been like this for 3 months and i have checked the air filter, oil, and changed to new spark plugs. this stock car should get me well over 200miles. I start school soon so now im starting to bitch. how do i tell if my o2 sensor is bad?
     
  2. JrSiRb16A

    JrSiRb16A Senior Member

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    Nail It..and see if your check engine light comes on..youll also notice a lack of power after that..or just replace it..they dont cost that much..
     
  3. andrew714

    andrew714 Junior Member

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    what do u mean nail it?
     
  4. highperboi

    highperboi Senior Member

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    he means gas it all the way
     
  5. andrew714

    andrew714 Junior Member

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    what would gasing it all the way do? my d15 is slow as hell
     
  6. nealo

    nealo Senior Member

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    HAHAHA.

    He doenst want you to see if your car is slow or not, he wants you to floor it to see if the check engine light turns on. :spin:
     
  7. andrew714

    andrew714 Junior Member

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    nah, check engine light doesnt come on.. so o2 is still good?
     
  8. HatchSpeeD

    HatchSpeeD ...Hi...

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    Try adding fuel treatment to clean the system and injectors, also I would look into changing your fuel filter.
    PEAS
     
  9. kingwilly

    kingwilly Senior Member

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    lol..good answers in this thread..basically sounds like you need a tune up bro,do a valve adjustment if you can,like someone else said get a new fuel filter while your at it..get ngk or denso spark plugs,check your timing if you can..good luck doodsky
     
  10. JrSiRb16A

    JrSiRb16A Senior Member

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    do a tune-up..i say replace the O2 first..and see what happens before u start replacing shit that is fine...youll save some money if its just that..
     
  11. MarkJimenez99

    MarkJimenez99 Senior Member

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    Turn your car on and check to see if you have a fuel leak anywhere. Look for any drips. Do you smell any gas fumes? My gas mileage was poor because I had a fuel leak. I noticed a gas smell too while I was in the car. My gas mileage improved after fixing the leak.
     
  12. andrew714

    andrew714 Junior Member

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    thanks guys. ill change the o2 and see what happens. i dont have a fuel leak.
     
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