Take a look at these the best you can and see if there is any thing unsual. The electrodes are ok, some sutt about 1/4 the way up the threads. Use cocktail every time I add fuel.
Take a look at these the best you can and see if there is any thing unsual. The electrodes are ok, some sutt about 1/4 the way up the threads. Use cocktail every time I add fuel.
The reason for the replacement was a miss at idle. Hadn't ran the boat yet but will keep posted of the results.Also first change at 73 hrs a 2006 Motor bought new.
Overall, appear normal and healthy (except for #6). #6 indicates it's been running rich (or could simply be misfiring).
Based on #4 and #5 looking pretty good, I'd be surprised if it's not simply a misfiring plug.
Install the new set and see how it does..... and yes, these plugs ARE pricey (the price has actually come down over the past year or so.... retail price was originally in the mid-twenties EACH).
We discount these plugs more than $3 each for BBC members.... and Sparkplugs.com offers them at a GREAT price (they even have a BBC discount code- hard to beat that price ANYWHERE).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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