Which spark plugs should we use

Discussion in 'Generation 4 - Maintenance & Troubleshooting' started by FOSHOMATT, Sep 6, 2019.

  1. FOSHOMATT

    FOSHOMATT Member

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    Hey guys just a question but what spark plugs should we be using? I have a lms tune and everything but rather just buy the plugs themself so gap them and save some money.
     
  2. High on Ethanol

    High on Ethanol SHO Member

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    Motocraft Sp-542 gap 0.28
     
  3. FiveLeeter918

    FiveLeeter918 Ortiz Performance Sales

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    ^^ this. I stock them for $59.99 for a set of 6 pre-gapped.
     
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  4. Lostneye

    Lostneye SHO Member

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    LMS always recommended the stock plugs and stock gap. I changed them every 6 months or so when tuned by them, I could tell if it was going to long between changes as the idle would get rougher. I went to another tuner after LMS and 542s gapped at 26 idle much smoother.
     
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