Engine Won't Start

Discussion in 'General Motoring' started by John, Aug 8, 2004.

  1. John

    John Guest

    Hello group,

    I'm in a bit of a jam, my Tiburon GT 2003 will not start.

    I changed the oil myself yesterday with 5w30 Mobil 1. I also replaced
    the cabin air filter.

    Now, the engine barely cranks and then nothing. It's not the battery
    (i think) since all the lights work. The fuel tank is at 3/4 full.
    I'm thinking it's the spark plugs? But it's so weird that it all
    happened after the maintenance work I did yesterday.

    I called AAA today, but then realized all the service stations are
    closed on Sundays. So, between now and Monday, I was hoping someone
    might have an idea about what's going on and that I might be able to
    fix the problem.

    I'm pretty new at this do-it-yourself maintenance, but I've changed my
    oil before without any issues... although, I've only used 10W40
    before; dunno if that made any difference. Oh, and I installed a
    Fumoto engine oil drain valve with that last oil change. I thought it
    would make things easier. Anyways, I'm getting off track.

    Looking forward to any feedback or suggestions.

    Thank you,
    John, Aug 8, 2004
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  2. John

    Speedy Jim Guest

    You may have disturbed a battery/starter cable connection
    and/or the connection is corroded.

    Don't rule out the battery either. I'd be tempted to swap in a
    battery from another car.

    Speedy Jim
    Speedy Jim, Aug 8, 2004
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  3. John

    ED Guest

    If the lights dim or go out when the engine is being cranked, I would
    suspect the battery needs a charge or replacement.

    ED, Aug 9, 2004
  4. John

    John Guest

    Considering the fact that the cabin lights and headlights were still
    working, I was surprised to find out that it was in fact the battery.
    The tow truck guy went ahead and tried a jump start and it fixed it.
    Well, I learned =).

    John, Aug 9, 2004
  5. John

    hyundaitech Guest

    It takes much less current to operate anything elso on the car when
    compared to the starter motor.
    hyundaitech, Aug 10, 2004
  6. John

    Hal Guest

    If the lights dim or go out when the engine is being cranked, I would
    It was probably one dead cell in the battery. You can test for that
    pretty easy with a regular voltmeter. Test the battery voltage with no
    load(ie, ignition off, lights off). You should see about 13 volts on a
    nearly-new battery and no less than 12.2-12.6 on a used battery. It
    will drop below 12 volts while the engine is being cranked, but
    anything below 8 volts is definately suspect.

    It's somewhat unrelated but the original battery on my Kia did exactly
    what yours did...started cranking slow. Then one morning it cranked
    over and started..barely, and then it threw a check engine light at
    me. As it turns out, Kia put a DTC in the ECM for 'low battery
    voltage' and I hit that threshold during cranking. A new battery fixed
    it right up. Had your car started with that marginal battery you
    probably would have had a check engine light alerting you to the
    voltage problem.

    Hal, Aug 11, 2004
  7. Actually, a fully charged, properly functioning battery should produce
    14.2 volts (2.3v per cell x 6 cells).
    Brian Nystrom, Aug 11, 2004
  8. John

    hyundaitech Guest

    You mean I've never seen a fully charged, properly functioning battery in
    my 11 years of auto repair. I was taught that it was about 12.8.
    Acceptable alternator regulated voltage begins as low as 13.5!
    hyundaitech, Aug 11, 2004
  9. John

    Hal Guest

    I was thinking the same thing. I've seen them hit 13 volts but never any higher.

    Hal, Aug 12, 2004
  10. John

    Speedy Jim Guest

    After discharge (such as from long cranking period or lights left on),
    the battery should be charged to around 14.5V (approx).
    Once fully charged, it can be "maintained" at 13.5V

    Wealth of battery info here:

    Speedy Jim
    Speedy Jim, Aug 12, 2004
  11. What can I say; that's the design spec. If you stick a voltmeter across
    a new battery with no load on it, that's what you'll get. It will
    degrade a bit with use, but I've measured 14v on batteries that have
    been used for a few years, too. As you stated, there's a pretty broad
    range of usable voltage, with the key being that it's at least 12v.
    Brian Nystrom, Aug 12, 2004
  12. OOPS! Bad math. That should have read 13.8 volts, not 14.2. That's what
    I get for doing it in my head! ;-)
    Brian Nystrom, Aug 12, 2004
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