BajaNomad

Heat Range ? for NKG plugs

Santiago - 5-25-2015 at 09:24 AM

Time to change the plugs and I'm getting two different suggestions for the plugs for my Mercury 115HP 4 stroke. Some say use the cooler 6A and some the hotter 5A. My use is 50% trolling and 50% WOT if calm and little less if choppy. I don't think this really makes much difference, right?

woody with a view - 5-25-2015 at 10:55 AM

no difference, as far as i know. Cappy? use what the manual says to use.

plugger's

captkw - 5-25-2015 at 11:34 AM

If they look really,really white (hot) go with a colder plug...if they look normal run the same plug.. plugs in a marine motor I/O,,inboard,,outboard last a Loooonnngg time...