Is there an objective DIY spark plug test?
Last Post 27 Aug 2014 09:26 PM by Thomas Matt. 0 Replies.
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Thomas Matt
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27 Aug 2014 09:26 PM
    When one reads spark plug reviews, people say the engine runs better with new plugs. While some of that could be due to better gap in new plugs, I'm afraid some of that is placebo, like better running engine after oil change.

    Now, I understand that one can measure firing voltage via oscilloscope. Is there a simpler objective test?

    MRO Supply