I tested the spark gap of a 1/2" and see spark on all 3 but can't tell if it's going the whole 1/2" is that good enough or does it have to go the whole 1/2"
Also, the plugs suggested fir my outboard (L77JC4)are 03 gap but the manual says 04 gap should I make the gap on those plugs 04 or leave...