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gas mileage

This is a discussion on gas mileage within the General Help forums, part of the LSx Technical Help Section category; i know there is a thread on this but this is a little more serious than what i have read ...

  1. #1
    Member adham's Avatar
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    gas mileage

    i know there is a thread on this but this is a little more serious than what i have read
    i have a 2000 trans am with slp airlid, K&N filter, MAC Headers/high flow cats, flowmaster catback, free ram air and new plugs and wires.
    I have been getting 13.5-13.9 mpg in the city
    i dont ride it hard or anything, as a matter of fact, i have been driving it like a grandma to see how much miles i can get
    everyone else's is getting like at least 17 mpg
    what the fuck is wrong with mine?
    if it matter, i have 115,000 miles on my car.
    ........and sometimes i smell gas around the car.
    please please help because im clueless

  2. #2
    Senior Member 02z28ls1's Avatar
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    You should NEVER smell gas around your car-you need to track down where that is coming from.If you can't you need to get somewhere that can.Just crawl under the back of the car with a flashlight and look for wetness and see if it smells like fuel by rubbing it w/your finger and smelling it.(I know that sounds funny-but this is serious).Any fuel leak can wind up catching your car on fire-not fun!It can be the source of your bad fuel mileage-but that more depends on where you drive.If you only drive a few miles and it's stop and go then it's not unreasonable to get 13 mpg.It's out on the straight hiway stuff that you should be getting more like 30.Averaging the city and hiway (w/emphasis on city and stop and go)will usually net me around 15 -18 mpg average for the tank.

  3. #3
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    Sounds like to me you might have a gas tank leak. My dad noticed the same thing with his S-10 (smelled gas) we got to snooping around and found that it had small pen head size hole in the tank...amazing so much gas could come out of such a small whole but it did.

  4. #4
    Member adham's Avatar
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    actually i do alot of short distances like stop and go
    the gas smell is not constant
    it does it only when i turn it on
    i dont smell anything while im driving
    i can sometimes smell it inside the cockpit when i turn it on

  5. #5
    Senior Member Zboner's Avatar
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    i got bad gas mileage

    that is only the beginning when you start to mod

    and mine smells like gas
    95 WS6, 6 speed, FULL suspension, 9" spool, Vortech S/C HARD TOP!!!!!!!!!!!!!!

    99 Z28/SS Vert Triple Black, H/C

  6. #6
    Member adham's Avatar
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    that makes me feel better...thanks

  7. #7
    Sideways to da next light redline's Avatar
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    i have no cats and it smells like somebody poored gas in my driver seat.MY GAS MILEAGE SUCKS ASS. i love it!!!

  8. #8
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    Makes me feel a little better just hearing you guys talk of how sucky gas mileage yall are getting. My new Z is averaging around 20MPG and i've been scratching my head over this because the other '99 Z I had would get 23-24MPG just normal driving....and we took it on vacation one year and got 29MPG on the highway!

  9. #9
    Senior Member Zboner's Avatar
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    yea im getting like 10-14 MPG, and prolly like 9 in the city

  10. #10
    Member adham's Avatar
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    Now thats more like it!!!

  11. #11
    Story of My Life!! BIG D's SS's Avatar
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    Damn my car is getting about 17 mpg with all my mods. That is a combo of stop and go and freeway.

  12. #12
    Senior Member 02z28ls1's Avatar
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    OK-he turns the key on and he smells gas(back to topic)-and nobody thinks there is a problem? OKKKKK-I'm thinking there's a fuel leak.It's simple then -turn the key on and look for a leak-might have to get it up in the air.Most places will look at something and give an estimate for free.Doesn't mean they have to fix it-but a fuel leak is dangerous.

  13. #13
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    I average around 17mpg and thats with city/highway combined.

  14. #14
    99TA
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    I get about 20-22 mpg.

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