White powdery corrosion on OUTSIDE of spark plug - cause of misfire 99 Elentra

Discussion in 'General Motoring' started by KWW, Oct 4, 2004.

  1. KWW

    KWW Guest

    My son's 99 Elantra's engine was misfiring. Code said #4 was the culpret.
    Went to replace the plugs and plug wires (we'd had it over a year - short
    trips to/from school - so the non-Hyundai plug wires the PO had on it were
    due....). #s 1 - 3 looked normal... no problem... took the plug wire off
    #4 and the inside of the metal tube leading down to the plug had white,
    scaley corrosion in it. The car had been sitting for a week because I had
    not had time to mess with it. Anyway, to me that says that there is some
    sort of water or something getting in there. Took out the plug and the
    exposed portion of it (metal and part of the insulator) had the same white
    stuff on it. Any thoughts? It has run great. No problems. oil looked
    normal... no water in it or anything.

    NOW, ONE THING.... for the first year we had it, until the beginning of this
    year, the car had only been driven in short hops (to/from his school 1.5
    miles away). Starting earlier this year the car started getting out on the
    highway for about 1/2 hr to/from a different destination and I noticed that
    the oil quit getting that sludgy deposit on the filler cap that often comes
    when the engine doesn't get hot enough to vaporize the water and other stuff
    that gets in it (condensation, etc)... but that has not been the case for
    the past 6 or 7 months....

    Any thoughts? Sound familiar? I don't see oil in the radiator fluid
    either...
    TIA
    KWW
     
    KWW, Oct 4, 2004
    #1
  2. KWW

    hyundaitech Guest

    The corrosion in the plug hole probably indicates someone got water in
    there. Some aftermarket wires don't even seal the hole. But, if the
    moisture's gone, don't sweat the corrosion.

    If you're getting the condensation intermix on the oil cap, but nowhere
    else, just make sure you change your oil frequently.
     
    hyundaitech, Oct 4, 2004
    #2
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