Spark plugs for a 1990 chevy ilumina...?

Does anyone know the gap for spark plugs on a 1990 chevy ilumina 6 cylinder?

Thank you!

5 Answers

  • 9 years ago
    Favorite Answer


    1990 Chevrolet Lumina-Sedan/Coupe 3.1L MFI OHV 6cy The Spark Plug Gap Is

    .045 (In thousandths of an inch)

    Please excuse the other posters that would not take the time to post the correct information to your question.Best of luck.

    Source(s): GM dealer tech over 30 years.
  • 9 years ago

    Its 0.045 , not .060

  • 9 years ago

    there should be a sticker under the hood on the radiator support. i would say at least 60 thousands.

  • Anonymous
    9 years ago

    under your hood there is a sticker that states emissions etc.the plug type and gap are printed on that.useful tidbit,any for use in america car must have that also gives engine size/design,emissions systems in place.yr of conformation to smog laws,idle speed and if i remember right timing specs.

    Source(s): dont apologize for me,i just showed em how to find the info for themselves.hmm now they dont need you,i apologize for that smartassh. so your saying the sticker isnt there or always trust gm mechanics.simple the sticker is there,problem solved,she dont have to ask this question ever again.
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  • 9 years ago

    Set em at .040" and go.

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