Plug analysis -348 | FerrariChat

Plug analysis -348

Discussion in 'Ferrari Discussion (not model specific)' started by JOHNCJ8989, Sep 19, 2021.

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  1. JOHNCJ8989

    JOHNCJ8989 Formula Junior

    Dec 11, 2003
    520
    Full Name:
    John
    I felt as though the car is running a little rich so I pulled a few plugs to get a read. Does this look a little on the hot/lean side or optimal? Thanks!
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  2. Llenroc

    Llenroc F1 Veteran
    Rossa Subscribed

    Jun 9, 2004
    5,574
    Colorado
    Full Name:
    Vern
    That looks to be about as good as it gets. I would put just a very small amount of anti seize compound on the threads, plugs these days have the threads plated with nickel so corrosion isn’t as possible but I still apply a little
     
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  3. JOHNCJ8989

    JOHNCJ8989 Formula Junior

    Dec 11, 2003
    520
    Full Name:
    John
    Thanks! I’ll do that:)
     
  4. tomberlin

    tomberlin Formula Junior
    Silver Subscribed

    Apr 9, 2005
    854
    Bethesda
    Full Name:
    tom berlin
    The porcelain around the center electrode indicates plug heat range- nice tan -looks good.
    The inside cylinder adjacent to the threads tells you how the mixture is doing. That looks good as well.

    Cheers,
    Tom
     
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