Topping Up Fuel Tank

Discussion in 'General Motoring' started by Guncho, Feb 23, 2007.

  1. Guncho

    Guncho Guest

    I just acquired a copy of the manual for my 1999 Hyundai Accent GSI
    and it says you should not top up the tank when refueling.

    What's the rationale behind that?

    Guncho, Feb 23, 2007
  2. All cars say that now. It has to do with the emissions system. You need
    some airspace in the tank for the recirculation system to work properly. .
    Edwin Pawlowski, Feb 23, 2007
  3. Guncho

    Guncho Guest

    So you agree that you shouldn't top up?

    Guncho, Feb 23, 2007
  4. Right. The few extra ounces you get in the tank may cause the check engine
    light to come on if nothing else. I've had that happen with my Buick.
    While it did not cause a mechanical problem, it was an un-needed annoyance.
    Sometimes the engineers know what they are talking about.
    Edwin Pawlowski, Feb 23, 2007
  5. Guncho

    Guncho Guest

    HOLY CRAP! Maybe that's why my Check Engine light comes on all the
    time after refuelling!

    Guncho, Feb 23, 2007
  6. Guncho

    kaboom Guest

    **There's that and not turning the gas cap enough. My Mom's XG350 has
    thrown that light a few times and it was due to the cap not being
    tightened enough.

    kaboom, Feb 23, 2007
  7. Guncho

    Guncho Guest

    I always thought it was that but maybe it was because I always top up
    the tank!

    Guncho, Feb 23, 2007
  8. Guncho

    Wayne Moses Guest

    Reply to message from "Edwin Pawlowski" <> (Fri, 23 Feb 2007
    14:24:30) about "Re: Topping Up Fuel Tank":

    EP> Sometimes the engineers know what they are talking about.

    Hah! We always know what we are talking about, especially when it comes to
    our products. ;-)

    Best Regards
    Wayne Moses <> Fri, 23 Feb 2007 18:46:16 -0600

    === Posted with Qusnetsoft NewsReader 3.3
    Wayne Moses, Feb 24, 2007
  9. Guncho

    Vic Garcia Guest

    Actually, those are not the engineers talking, those are the stupid
    politicians forcing every manufacturer to install expensive devices to
    protect some Owls in in Oregon.
    If they removed all that emission crap, the increase on efficiency and
    lower gas use will make better for the environment, but of course, then,
    big oil will not make record profits, and Detroit will not sell a single
    car ... fat chance of that happening.
    Vic Garcia, Feb 24, 2007
  10. Guncho

    Matt Whiting Guest

    Too much gas and you can flood the vapor recovery system.

    Matt Whiting, Feb 24, 2007
  11. Guncho

    Matt Whiting Guest

    Yes. When the pump shuts off automatically, you shouldn't add a lot
    more fuel. After the pump kicks off, I tend to run up to the nearest 10
    cents and then stop.

    Matt Whiting, Feb 24, 2007
  12. Guncho

    Guncho Guest

    Damn I always fill it til it overflows a little to prolong my not
    having to fill up.

    Guess you learn something new everyday!

    Guncho, Feb 24, 2007
  13. Guncho

    Matt Whiting Guest

    Yes, you learn that it pays to ead your owner's manual when you get a
    new car! :)

    Matt Whiting, Feb 24, 2007
  14. Guncho

    me Guest

    Had that happen on wifey's 2003 Tib. Was on a short trip one day, and
    the check engine light came on. Dropped her at the store and went to
    the dealer to find out the cause. Turns out that she and daughter (both
    blondes, incidentally) had failed to screw the gas cap in properly after
    last fuel stop!
    me, Feb 24, 2007
  15. Guncho

    me Guest

    Vic Garcia wrote:

    me, Feb 24, 2007
  16. Guncho

    Matt Whiting Guest

    Wow, two clueless folks in a row.

    Catalytic convertors and related pollution controls remove something
    upwards of 90% of the pollutants that would otherwise be emitted. To
    make that up with better mileage alone would require that cars get 10
    times better fuel mileage without the pollution controls. You can
    believe all of the gimmick ads you want, but thermodynamics precludes
    this happening.

    Matt Whiting, Feb 24, 2007
  17. Guncho

    Vic Garcia Guest

    Actually, you are the one more or less, clueless, you only took into
    account the local effects, not the global ones.

    First, that figure of 90% is way out of real life values; it's more like
    40%, most of he improvements came from better and clean gas.
    Second, while in a big engine (Detroit type) the lost of power is around
    20%, in a small, more efficient one it can be near 50%, a big hit on gas
    use, I did owned 3 Ford Fiestas, 2 Europeans: 0.9L, 1.1L and 1 American:
    1.6L with all that junk in .... result:
    less power than the small euro engine, 40% more gas used .....
    Third, all the emission junk add: weight (more gas to move it), more
    parts to break (more money out of your pocket) and a lot of pollution in
    the places they are manufactured (catalytic converters use rare metals
    as the catalytic agent), while that does not affect you or me, locally
    it's there in the planet, and we ALL have to share it.

    In a global perspective those devices, create more pollution than what
    they prevent.
    Same thing apply to the hybrids, the battery manufacturing plants
    generate more pollution making the first set of batteries, than what the
    car will save over their life ... so what's the point ??????

    Simple, it's not in my backyard, the polluting materials are made on
    another countries .... well, we are Earth citizens, mother Nature will
    get back to us eventually.
    Vic Garcia, Feb 24, 2007
  18. Guncho

    Mike Marlow Guest

    Amen??? Hell, cars today last years longer and go hundreds of thousands of
    miles as a standard expectation. The great cars of yesteryear didn't
    approach the longevity and reliability of today's cars. Nor did they
    approach the fuel mileage. Now, I'm with ya if you really miss the big
    block torque and HP of days gone by, but that's a lot different than what
    the OP stated.
    Mike Marlow, Feb 24, 2007
  19. Guncho

    Hyundaitech Guest

    Continued fueling after the automatic pump shutoff can force fuel into
    the vapor control system. That, in turn, can prevent the vapor
    control system from working properly, and cause the ECM to illuminate
    the check engine lamp
    Hyundaitech, Feb 25, 2007
  20. Guncho

    Guncho Guest

    We actually didn't get an owner's manual when we bought this used
    car. I just bought one on Ebay.

    Guncho, Feb 25, 2007
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