What is this little hole underneath my spark plug ? Perfectly round. I stuck a paper clip in the hole and it went all the way to my spark plug. I pulled the paper clip out and there was the spark plug antiseize stuff on the paper clip when I pulled it out. O yeh, and on the other head there is the same type hole underneath that spark plug too. What the freak-n-frack is that hole for ?


thanks !

Holland