Sloshing Sound from Gas Tank-2006 Sonata

Discussion in 'Hyundai Sonata' started by bop, Jan 17, 2006.

  1. bop

    bop Guest

    When coming to a stop, we hear gas sloshing back and forth in our new
    4 cyl. GLS. I didn't hear this in my test drives, but do now. Anyone
    have the same problems and any insights into a fix? Johnboy
    bop, Jan 17, 2006
  2. Without a tad more info I would dare to say you are hearing gas
    sloshing around in your gas tank. Whats your read on the
    Dr.Colon.Oscopy, Jan 18, 2006
  3. bop

    Eric G. Guest

    wrote in
    You know, this is something I am noticing more and more with my '06 GLS.
    It is definitely gas in my tank sloshing around, and I really only hear it
    from when the tank is full until about 1/8 empty.

    With Hyundaitech mentioning that these tanks have no baffles (I think that
    is what he said), it is not surprising, and doesn't really concern me
    except for the fact that it seems to be getting worse over time.

    Eric G., Jan 18, 2006
  4. bop

    Matt Whiting Guest

    I hear this occasionally in my GL as well. No idea if there is a fix.
    I'm guessing Hyundai didn't baffle the tank sufficiently or at all and
    this isn't something easily fixed. Turning up the radio helps. :)

    I also hear noises from the rear occasionally when applying the brakes,
    but haven't taken it in yet to have someone else listen.

    My dash also makes a fairly sharp cracking/popping noise when I hit a
    very abrupt bump (edge of a bridge apron for example). Anyone else have
    this problem?

    Matt Whiting, Jan 18, 2006
  5. bop

    Matt Whiting Guest

    I don't think this will cause a problem, but I do wonder if it will have
    any affect on the electric fuel pump. Might cause something to fatique
    and fail after a few years of this. Also, it might let the pump run in
    air occasionally when the tank is low and you are stopping, cornering or
    accelerating hard. I'm assuming the Sonata has the standard in-tank
    electric fuel pump as do most FI cars. These pumps are lubricated and
    cooled by the gas they are pumping. If they run in air, their life can
    be shortened rather dramatically.

    A separate but related question, has anyone had their low fuel light
    come on yet? I ran mine down to less than 1/8" by the gauge and still
    no light. I put in 15.5 gallons in a tank that I think is claimed to
    hold 17.7. Most cars I have give the low-fuel warning at about the 1/8
    tank level. I'll run it down a little lower next time know that I know
    that I still have two gallons left at the 1/8 mark.

    Matt Whiting, Jan 18, 2006
  6. bop

    Eric G. Guest

    Agreed. Definitely a concern.
    The light came on for me when I hit "E". Strangely enough the trip
    computer showed I had "0" miles left, but when I filled up (about 10 miles
    later) I still only took 16.9 gallons. My guess would be that it gives you
    a 1-1.5 gallon reserve.

    All of my Hyundai's have acted the same, with the light not coming on until
    about the "E" level.

    Eric G., Jan 18, 2006
  7. bop

    Matt Whiting Guest

    Ok, I'll have to put a can of gas in the trunk and test my own car.
    That seems like a pretty small margin. Where I live, it isn't unusual
    to be 20 miles from the nearest gas station, and at night, the nearest
    open station might be even farther away.

    Matt Whiting, Jan 18, 2006
  8. bop

    tjnamtiw Guest

    I live near a new facility that is starting up to make plastic fuel tanks
    for Kia and, I assume, Sonata. It's in Lavonia, Ga. They are using a new
    technique designed to minimize emisiions to meet the government's standards.
    They are blow molding the tank around all of the fuel components at one
    shot. That is, the fuel pump, level sensor, and all of the various hoses
    are contained inside the tank when it is blow molded. There is one small
    access hole, but it is too small to remove or replace any of the components.
    Guess what? When anything fails in the tank, you replace the entire gas
    tank!!! Thank our forward thinking government for that one. Also, in the
    cut up parts that I saw, there were no baffles. The only thing that
    prevents sloshing are all the components and hoses in there.

    tjnamtiw, Jan 18, 2006
  9. bop

    Matt Whiting Guest

    How is blow molding with the parts in place any better at minimizing
    emissions that blow molding the tank with a hole in it to contain the
    pump and sending unit? I assume you are talking about emissions from
    the manufacturing process, but maybe I missunderstood you.

    Yes, blow molding baffles into a tank would be a real innovation!

    Matt Whiting, Jan 18, 2006
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.