What is the correct plug to buy? Where do most people get them online, auto parts store?
Also should be a tag on the VST (high pressure fuel pump) with plug info and gap..
Some get them from sparkplugs.com (BBC sponser with a 10% off code) while others get them from the auto parts store..
NGK: IZFR5G is the correct plug.... gapped at .032"
Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor