rmsnoel Posted November 3, 2013 Share Posted November 3, 2013 I found this cool video on youtube and may be of help to a few. All comments welcome https://www.youtube.com/watch?v=fiMM2S0aADM&feature=youtube_gdata_player Quote Link to post Share on other sites
TurboTobz Posted November 3, 2013 Share Posted November 3, 2013 Surprisingly a lot of people don't know/understand this, it's a very good technique Quote Link to post Share on other sites
rmsnoel Posted November 3, 2013 Author Share Posted November 3, 2013 I thought I knew about plugs until I found this. Mine were always a nice tan colour and Id pull no.4 every now and again to watch for overheating or oil burning (mostly oil burning)Now Ive the bigger tb on its a clean white plug though the base ring is black. I cant see the other marks yet though Quote Link to post Share on other sites
GP82 Posted November 27, 2013 Share Posted November 27, 2013 Half the vid is incorrect, for example ground strap does not indicate heat range but spark lead. Anyway inspecting a spark plug is the most accurate way of telling how good a tune is and this is not jus' WOT tune, but all engine conditions. More accurate then a afr, lead or egt feedback in my opinion. Quote Link to post Share on other sites
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