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Spark plug/ gap test questions

IBSLACKEN

IBSLACKEN

New member
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 them at 03 gap, any help would be appreciated
 
IBSLACKEN said:
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 them at 03 gap, any help would be appreciated
Click to expand...

It is impossible to only go part way
 
Last edited:
After thinking about it, I wonder if that was a true statement. There would be ionized air some millionth of a second before the arc but I am amazed you could see it. What kind of spark checker are you using? What say you, Electrical Engineers?
 
Huh? I'm no electrical engineer and just using a cheapo tester and a video camera
And reading glasses and a magnifying glass
 
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