Gas milage issue (non subaru)
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This is a discussion on Gas milage issue (non subaru) within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I have been having a odd issue with my daily driver. It's a 1995 escort with a 1.8 and around ...

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    Gas milage issue (non subaru)

    I have been having a odd issue with my daily driver. It's a 1995 escort with a 1.8 and around 205k on it.

    My MPG seems to vary every other tank. Meaning one tank I get 22-24 mpg and the next tank I'll get 33mpg. I averaged 33 mpg for around 3-4 years before.

    The car has recently had 4 new plugs and wires. Doesnt show any signs of running weak on power, fuel filter is a year old. Car gets 89 octane and I use the same gas station/pump for each fill up.


    It's very odd because it is literraly every other tank. I go 23mpg/34-36mpg/23mpg/34-36mpg.

    I have looked for leaks and havent noticed anything. This has been going on for awhile, and before I moved so I doubt anyone is actually taking gas out of it.


    Thoughts?
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
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    Registered User Micah's Avatar
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    I had a 1994 Escort LX - I think it was 1.8l, but I'm not positive. It consistantly got 40mpg, which made me love that car so much. Then my friend who sold me the car borrowed it, and totalled it. My wedding gift to her was not going after her insurance and raising her rates.

    I'm assuming you are calculating the mpg by doing the math between fill ups?
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    I am doing the calculations correct.

    I dont know what would give such a consistant inconsitant milage issue like that.
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
    You don't mind where you are, cause you know where you've been"

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    Registered User Micah's Avatar
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    do you have a locking gas cap?
    Torch Red 2002 Chevrolet Corvette Z06 46k mi.
    Black 2002 Subaru Impreza WRX 6-speed 94k mi. my mod list
    10/08/2006 - 14.089@103.01 (5-speed with well worn clutch, no launch)
    "Six stars gleaming, five speeds breaking, four tires chirping, three differentials working, two liters screaming, one turbo boosting... it's what makes a Subaru all-wheel-drive, all we'll drive."
    for Bugeye owners my BOV thread Service Manuals

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    Registered User 96accord's Avatar
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    that is weird... of course oil changed regularly?

    could it be something with the computer??

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    Quote Originally Posted by Micah View Post
    do you have a locking gas cap?
    You know I thought about that, but it's been happening for awhile and I've since changed residences/job locations so I dont see where that would happen.

    As for it being ECU related it's not OBDII even. The ECU doesnt do half as much as it does in newer cars.

    It's not missing or anything that I can tell. No CELS. Head was recently machined and new gasket. No leaks noticed under the car.

    As for oil changes...I dare not call them regular, but they have been done pretty reguarly since I've had it between 3-5k miles...basically whenever I get around to it.
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
    You don't mind where you are, cause you know where you've been"

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    Up for the day work crew.
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
    You don't mind where you are, cause you know where you've been"

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    Registered User 96accord's Avatar
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    Quote Originally Posted by 302@12psi View Post
    Up for the day work crew.
    yeah i was thinking about that last night when i got off of here... it's puzzling and gonna bug me, even though it's not my car!! argh

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    Registered User Gaza's Avatar
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    I had a similar problem on my 91 GT. It turned out to be leaking from one of the connections on the fuel rail. I noticed little puddles of fuel on my lower intake plenum.
    -Gary-
    07' UGM STi "Hawk-Eye Alliance #074"
    90' DA6
    90' EF

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    Quote Originally Posted by Gaza View Post
    I had a similar problem on my 91 GT. It turned out to be leaking from one of the connections on the fuel rail. I noticed little puddles of fuel on my lower intake plenum.
    I'll have to take a look...the head was recently off, but it started giving me fuel issues before that point.

    Kind of at a lost here, I guess something might be up with the MAF or throttle body but it isnt running horrible. It's kind of hard to judge if a car is down on power when it only has 100 to begin with.

    It does have the stock cat in there...maybe clogged?
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
    You don't mind where you are, cause you know where you've been"

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    Registered User Gaza's Avatar
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    Quote Originally Posted by 302@12psi View Post
    I'll have to take a look...the head was recently off, but it started giving me fuel issues before that point.

    Kind of at a lost here, I guess something might be up with the MAF or throttle body but it isnt running horrible. It's kind of hard to judge if a car is down on power when it only has 100 to begin with.

    It does have the stock cat in there...maybe clogged?
    Well, the cat would trigger a CEL and VERY poor performance issues. Try throwing on a fuel pressure gauge, just for giggles. It also wouldnt hurt to clean your MAF sensor.
    -Gary-
    07' UGM STi "Hawk-Eye Alliance #074"
    90' DA6
    90' EF

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    I was tossing the cat out there since every once in awhile under load I'd get that lovely egg smell.

    Possible a bad 02 sensor? I have no idea at this point and I dont know what the ECU in 95 will tell you. I guess it would show a bad 02sensor but I have no idea.
    0-60 faster then your first sexual experience.
    "You've come far, and though you're far from the end
    You don't mind where you are, cause you know where you've been"

  14. #13
    Registered User Gaza's Avatar
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    Quote Originally Posted by 302@12psi View Post
    I was tossing the cat out there since every once in awhile under load I'd get that lovely egg smell.

    Possible a bad 02 sensor? I have no idea at this point and I dont know what the ECU in 95 will tell you. I guess it would show a bad 02sensor but I have no idea.
    That would make sense. Wouldnt hurt to take a look.
    -Gary-
    07' UGM STi "Hawk-Eye Alliance #074"
    90' DA6
    90' EF

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